Substituted aza-bicyclic imidazole derivatives useful as TRPM8 receptor modulators

ABSTRACT

The present invention is directed to substituted aza-bicyclic imidazole derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders and conditions modulated by TRP M8, including for example, inflammatory pain, inflammatory hyperalgesia, inflammatory hypersensitivity condition, neuropathic pain, neuropathic cold allodynia, inflammatory somatic hyperalgesia, inflammatory visceral hyperalgesia, cardiovascular disease aggravated by cold and pulmonary disease aggravated by cold.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a divisional of U.S. application Ser. No.14/172,395, filed on Feb. 4, 2014, which is a divisional of U.S.application Ser. No. 13/034,922, filed on Feb. 25, 2011, now granted asU.S. Pat. No. 8,680,098, and claims the benefits of the filing of U.S.Provisional Application No. 61/310,870, filed on Mar. 5, 2010. Thecomplete disclosures of the aforementioned related patent applicationsare hereby incorporated herein by reference for all purposes.

FIELD OF THE INVENTION

The present invention is directed to substituted aza-bicyclic imidazolederivatives, pharmaceutical compositions containing them and their usein the treatment of disorders and conditions modulated by the TRPM8(transient receptor potential, melastatin subfamily, type 8) channel.More particularly, the compounds of the present invention are useful inthe treatment of inflammatory pain, inflammatory hyperalgesia,inflammatory hypersensitivity condition, neuropathic pain, neuropathiccold allodynia, inflammatory somatic hyperalgesia, inflammatory visceralhyperalgesia, cardiovascular disease aggravated by cold and pulmonarydisease aggravated by cold.

BACKGROUND OF THE INVENTION

Transient receptor potential (TRP) channels are non-selective cationchannels that are activated by a variety of stimuli. Numerous members ofthe ion channel family have been identified to date, including thecold-menthol receptor, also called TRPM8 (MCKEMY, D. D., et al“Identification of a cold receptor reveals a general role for TRPchannels in thermosensation”, Nature, 2002, pp 52-58, vol. 416 (6876)).Collectively, the thermosensitive TRP channels and related TRP-likereceptors, such as TRPV1/2/3 and TRPM8, connote sensory responsivity tothe entire continuum of thermal exposure, selectively responding tothreshold temperatures ranging from noxious hot through noxious cold aswell as to certain chemicals that mimic these sensations. Specifically,TRPM8 is known to be stimulated by cool to cold temperatures as well asby chemical agents, such as menthol and icilin, which may be responsiblefor the therapeutic cooling sensation that these agents provoke.

TRPM8 is located on primary nociceptive neurons (Aδ- and C-fibers) andis also modulated by inflammation-mediated second messenger signals(ABE, J., et al. “Ca2+-dependent PKC activation mediates menthol-induceddesensitization of transient receptor potential M8”, Neurosci. Lett.,2006, pp 140-144, Vol. 397(1-2); PREMKUMAR, L. S., et al.“Downregulation of Transient Receptor Potential Melastatin 8 by ProteinKinase C-Mediated Dephosphorylation”, J. Neurosci., 2005, pp11322-11329, Vol. 25(49)). The localization of TRPM8 on both A Aδ- andC-fibers may provide a basis for abnormal cold sensitivity in pathologicconditions wherein these neurons are altered, resulting in pain, oftenof a burning nature (KOBAYASHI, K., et al. “Distinct expression ofTRPM8, TRPA1 and TRPV1 mRNAs in rat primary afferent neurons with ac-fibers and colocalization with trk receptors” J. Comp. Neurol., 2005,pp 596-606, Vol. 493(4), 596-606; ROZA, C. et al., “Cold sensitivity inaxotomized fibers of experimental neuromas in mice”, Pain 2006, pp24-36, Vol 120(1-2); and XING, H., et al., “Chemical and ColdSensitivity of Two Distinct populations of TRPM8-ExpressingSomatosensory Neurons”, J. Neurophysiol., 2006, pp 1221-1230, Vol.95(2)). Cold intolerance and paradoxical burning sensations induced bychemical or thermal cooling closely parallel symptoms seen in a widerange of clinical disorders and thus provide a strong rationale for thedevelopment of TRPM8 modulators as novel antihyperalgesic orantiallodynic agents. TRPM8 is also known to be expressed in the brain,lung, bladder, gastrointestinal tract, blood vessels, prostate andimmune cells, thereby providing the possibility for therapeuticmodulation in a wide range of maladies.

There remains a need in the art for TRPM8 antagonists that can be usedto treat a disease or condition in a mammal in which the disease orcondition is affected by the modulation of TRPM8 receptors, such aschronic or acute pain, or the diseases that lead to such pain, as wellas pulmonary or vascular dysfunction.

SUMMARY OF THE INVENTION

The present invention is directed to compounds of formula (I)

wherein

R¹ is selected from the group consisting of hydrogen, fluoro, chloro,fluorinated C₁₋₄alkyl and fluorinated C₁₋₄alkoxy;

R² is selected from the group consisting of hydrogen, chloro, bromo,C₁₋₄alkyl, fluorinated C₁₋₄alkyl and fluorinated C₁₋₄alkoxy; providedthat when R² is other than hydrogen, then

is selected from the group consisting of

wherein R³ is selected from the group consisting of hydrogen, chloro,cyano, C₁₋₄alkyl, fluorinated C₁₋₄alkyl, C₁₋₄alkoxy, fluorinatedC₁₋₄alkoxy, —O—(CH₂)₂—OH, —O—CH₂—CO₂H, —O—(CH₂)₂—O—(C₁₋₄alkyl),—O—CH₂-(fluorinated C₁₋₂alkyl), —O—(CH₂)₂—NR^(A)R^(B) and —NR^(A)R^(B);

wherein R^(A) and R^(B) are each independently selected from the groupconsisting of hydrogen and C₁₋₄alkyl;

alternatively R^(A) and R^(B) are taken together with the nitrogen atomto which they are bound to form a ring structure selected form the groupconsisting of pyrrolidin-1-yl, piperidin-1-yl, piperazin-1-yl,4-methyl-piperidin-1-yl, 4-methyl-piperazin-1-yl and morpholin-4-yl;

Q is an optionally substituted ring structure selected from the groupconsisting of formulas (a) through (h)

(a)

(an optionally substituted 5-pyrazolyl)

(b)

(an optionally substituted 4-pyrazolyl)

wherein R⁵ is C₁₋₄alkyl; R⁶ is selected from the group consisting ofC₁₋₄alkyl and fluorinated C₁₋₄alkyl; and R⁷ is selected from the groupconsisting of hydrogen, chloro, fluoro, cyano, C₁₋₄alkyl and C₁₋₄alkoxy;

(c)

(an optionally substituted 2-imidazolyl)

wherein R⁸ and R⁹ are each independently selected from the groupconsisting of C₁₋₄alkyl;

(d)

(an optionally substituted 5-isoxazolyl)

wherein R¹⁰ is C₁₋₄alkyl; and R¹¹ is selected from the group consistingof hydrogen and cyano;

(e)

(an optionally substituted 2-thienyl)

wherein R¹² and R¹³ are each independently selected from the groupconsisting of hydrogen and C₁₋₄alkyl;

(f)

(an optionally substituted 3-thienyl)

wherein R¹⁴ is C₁₋₄alkyl;

(g)

(an optionally substituted 2-furyl)

wherein R¹⁵ is C₁₋₄alkyl; and R¹⁶ is selected from the group consistingof hydrogen, chloro and bromo; and

(h)

(an optionally substituted spiro-tricyclic group)

wherein R¹⁷ is C₁₋₄alkyl;

and solvates, hydrates, tautomers and pharmaceutically acceptable saltsthereof.

The present invention is further directed to processes for thepreparation of the compounds of formula (I). The present invention isfurther directed to a product prepared according to the processdescribed herein.

The present invention is further directed to a compound of formula (I-S)

and solvates, hydrates, tautomers and pharmaceutically acceptable saltsthereof. The present invention is further directed to a process for thepreparation of a compound of formula (I-S) or pharmaceuticallyacceptable salt thereof. The present invention is further directed to acrystalline form of the compound of formula (I-S), as herein describedin more details.

Illustrative of the invention is a pharmaceutical composition comprisinga pharmaceutically acceptable carrier and the product prepared accordingto the process described herein. An illustration of the invention is apharmaceutical composition made by mixing the product prepared accordingto the process described herein and a pharmaceutically acceptablecarrier. Illustrating the invention is a process for making apharmaceutical composition comprising mixing the product preparedaccording to the process described herein and a pharmaceuticallyacceptable carrier.

Exemplifying the invention are methods of treating a disorder modulatedby TRPM8 (selected from the group consisting of inflammatory pain,including visceral pain, neuropathic pain, including neuropathic coldallodynia, cardiovascular disease aggravated by cold and pulmonarydisease aggravated by cold, in a subject in need thereof, comprisingadministering to the subject a therapeutically effective amount of anyof the compounds or pharmaceutical compositions described above.

Another example of the invention is the use of any of the compoundsdescribed herein in the preparation of a medicament wherein themedicament is prepared for treating: (a) inflammatory pain, (b)neuropathic pain, (c) cardiovascular disease aggravated by cold, or (d)pulmonary disease aggravated by cold, in a subject in need thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a representative pXRD spectra from the compound offormula (I-S), prepared as described in Example 35, STEP H.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is directed to compounds of formula (I)

wherein R¹, R²,

and Q are as herein defined, and solvates, hydrates, tautomers andpharmaceutically acceptable salts thereof. The compounds of the presentinvention are useful in the treatment of disorders mediated by TRPM8,including inflammatory pain (including visceral pain), inflammatoryhyperalgesia, neuropathic pain (including neuropathic cold allodynia),inflammatory somatic hyperalgesia, inflammatory visceral hyperalgesia,cardiovascular disease aggravated by cold and pulmonary diseaseaggravated by cold.

In an embodiment, the present invention is directed to compounds offormula (I-A)

wherein all variables are as herein defined, and pharmaceuticallyacceptable salts thereof. In another embodiment, the present inventionis directed to compounds of formula (I-B)

wherein all variables are as herein defined, and pharmaceuticallyacceptable salts thereof. In another embodiment, the present inventionis directed to compounds of formula (I-C)

wherein all variables are as herein defined, and pharmaceuticallyacceptable salts thereof. In another embodiment, the present inventionis directed to compounds of formula (I-D)

wherein all variables are as herein defined, and pharmaceuticallyacceptable salts thereof. In another embodiment, the present inventionis directed to compounds of formula (I-E)

wherein all variables are as herein defined, and pharmaceuticallyacceptable salts thereof.

In an embodiment, the present invention is directed to a compound offormula (I-S)

and solvates, hydrates, tautomers or pharmaceutically acceptable saltsthereof. In another embodiment, the present invention is directed to acompound of formula (I-S) or a pharmaceutically acceptable salt thereof.In another embodiment, the present invention is directed to a compoundof formula (I-S) or a pharmaceutically acceptable salt thereof, whereinthe pharmaceutically acceptable salt thereof is selected from the groupconsisting of sodium salt, potassium salt, hydrochloride salt,trifluoroacetic acid salt and methanesulfonic acid salt thereof,preferably, the sodium salt thereof.

In an embodiment of the present invention, R¹ is selected from the groupconsisting of hydrogen, fluoro, chloro, fluorinated C₁₋₂alkyl andfluorinated C₁₋₂alkoxy. In another embodiment of the present invention,R¹ is selected from the group consisting of hydrogen, chloro, fluoro,trifluoromethyl and trifluoromethoxy. In another embodiment of thepresent invention, R¹ is selected from the group consisting of chloro,fluoro, trifluoromethyl and trifluoromethoxy. In another embodiment ofthe present invention, R¹ is selected from the group consisting ofchloro and trifluoromethyl.

In an embodiment of the present invention, R² is selected from the groupconsisting of hydrogen, chloro, trifluoromethyl and trifluoromethoxy;provided that when R² is other than hydrogen, then

In another embodiment of the present invention, R² is selected from thegroup consisting of hydrogen and chloro; provided that when R² ischloro, then

In another embodiment of the present invention, R² is hydrogen.

In an embodiment of the present invention,

In another embodiment of the present invention,

In another embodiment of the present invention,

In another embodiment of the present invention,

In another embodiment of the present invention,

One skilled in the art will recognize that in the definition of the

group, the variables X, Y and Z are bivalent and are selected to yieldthe desired ring structures. More particularly, X is selected from thegroup consisting of CH and N; Y is selected from the group consisting ofCH and N; and Z is selected from the group consisting of CH—R³ and N,wherein R³ is as herein defined.

In an embodiment of the present invention,

is selected from the group consisting of

wherein R³ is selected from the group consisting of hydrogen, chloro,cyano, C₁₋₂alkyl, fluorinated C₁₋₂alkyl, C₁₋₄alkoxy, fluorinatedC₁₋₂alkoxy, —O—(CH₂)₂—OH, —O—CH₂—CO₂H, —O—(CH₂)₂—O—(C₁₋₄alkyl),—O—CH₂-(fluorinated C₁₋₂alkyl), —O—(CH₂)₂—NR^(A)R^(B) and —NR^(A)R^(B);wherein R^(A) and R^(B) are each independently selected from the groupconsisting of hydrogen and C₁₋₂alkyl; alternatively R^(A) and R^(B) aretaken together with the nitrogen atom to which they are bound to form aring structure selected from the group consisting of pyrrolidin-1-yl,piperidin-1-yl, piperazin-1-yl, 4-methyl-piperazin-1-yl andmorpholin-4-yl.

In another embodiment of the present invention,

is selected from the group consisting of

wherein R³ is selected form the group consisting of hydrogen, chloro,cyano, C₁₋₂alkyl, trifluoromethyl, C₁₋₄alkoxy, —O—(CH₂)₂—OH,—O—CH₂—CO₂H, —O—(CH₂)₂—O—(C₁₋₂alkyl), O—CH₂-(fluorinated C₁₋₂alkyl),—O—(CH₂)₂—NR^(A)R^(B), pyrrolidin-1-yl, piperidin-1-yl, piperazin-1-yl,4-methyl-piperazin-1-yl and morpholin-4-yl; and wherein R^(A) and R^(B)are each an independently selected C₁₋₂alkyl; alternatively R^(A) andR^(B) are taken together with the nitrogen atom to which they are boundto form a ring structure selected from the group consisting ofpyrrolidin-1-yl, piperidin-1-yl, piperazin-1-yl, 4-methyl-piperazin-1-yland morpholin-4-yl.

In another embodiment of the present invention,

is selected from the group consisting of

In another embodiment of the present invention,

is selected from the group consisting of

In another embodiment of the present invention,

is selected from the group consisting of

In another embodiment of the present invention,

is selected from the group consisting of

In another embodiment of the present invention,

is selected from the group consisting of

In an embodiment of the present invention, R³ is selected from the groupconsisting of hydrogen, chloro, cyano, C₁₋₂alkyl, fluorinated C₁₋₂alkyl,C₁₋₄alkoxy, fluorinated C₁₋₂alkoxy, —O—(CH₂)₂—OH, —O—CH₂—CO₂H,—O—(CH₂)₂—O—(C₁₋₄alkyl), —O—CH₂-(fluorinated C₁₋₂alkyl),—O—(CH₂)₂—NR^(A)R^(B) and —NR^(A)R^(B). In another embodiment of thepresent invention, R³ is selected form the group consisting of hydrogen,chloro, cyano, C₁₋₂alkyl, trifluoromethyl, C₁₋₄alkoxy, —O—(CH₂)₂—OH,—O—CH₂—CO₂H, —O—(CH₂)₂—O—(C₁₋₂alkyl), —O—CH₂-(fluorinated C₁₋₂alkyl),—O—(CH₂)₂—NR^(A)R^(B), pyrrolidin-1-yl, piperidin-1-yl, piperazin-1-yl,4-methyl-piperazin-1-yl and morpholin-4-yl. In another embodiment of thepresent invention, R³ is selected from the group consisting of hydrogen,chloro, cyano, methyl, trifluoromethyl, trifluoromethoxy, methoxy,ethoxy, isopropoxy, —O—(CH₂)₂—OH, —O—CH₂—CO₂H, —O—(CH₂)₂—OCH₃,—O—CH₂—CF₃, Pyrrolidin-1-yl, piperidin-1-yl, 4-methyl-piperazin-1-yl,morpholin-4-yl, —O—(CH₂)₂—N(CH₃)₂, —O—(CH₂)₂-(pyrrolidin-1-yl),—O—(CH₂)₂-(4-methyl-piperazin-1-yl) and —O—(CH₂)₂-(morpholin-4-yl).

In another embodiment of the present invention, R³ is selected from thegroup consisting of hydrogen, chloro, cyano, methyl, trifluoromethyl,trifluoromethoxy, methoxy, isopropoxy, —O—(CH₂)₂—OH, —O—(CH₂)₂—OCH₃,—O—CH₂—CF₃, Pyrrolidin-1-yl, piperidin-1-yl, 4-methyl-piperazin-1-yl,morpholin-4-yl, —O—(CH₂)₂—N(CH₃)₂, and —O—(CH₂)₂-(morpholin-4-yl). Inanother embodiment of the present invention, R³ is selected from thegroup consisting of hydrogen, chloro, cyano, methyl, trifluoromethyl,trifluoromethoxy, methoxy, isopropoxy, —O—(CH₂)₂—OH, —O—(CH₂)₂—OCH₃,—O—CH₂—CF₃, Pyrrolidin-1-yl, piperidin-1-yl, 4-methyl-piperazin-1-yl,morpholin-4-yl and —O—(CH₂)₂-(morpholin-4-yl). In another embodiment ofthe present invention, R³ is selected from the group consisting ofmethoxy, isopropoxy, —O—(CH₂)₂—OH, —O—(CH₂)₂—OCH₃, —O—CH₂—CF₃,piperidin-1-yl, morpholin-4-yl and —O—(CH₂)₂-(morpholin-4-yl). Inanother embodiment of the present invention, R³ is selected from thegroup consisting of chloro, methyl and methoxy.

In an embodiment of the present invention, R^(A) and R^(B) are eachindependently selected from the group consisting of hydrogen andC₁₋₂alkyl; alternatively R^(A) and R^(B) are taken together with thenitrogen atom to which they are bound to form a ring structure selectedfrom the group consisting of pyrrolidin-1-yl, piperidin-1-yl,piperazin-1-yl, 4-methyl-piperazin-1-yl and morpholin-4-yl. In anotherembodiment of the present invention, R^(A) and R^(B) are each anindependently selected C₁₋₂alkyl; alternatively R^(A) and R^(B) aretaken together with the nitrogen atom to which they are bound to form aring structure selected from the group consisting of pyrrolidin-1-yl,piperidin-1-yl, piperazin-1-yl, 4-methyl-piperazin-1-yl andmorpholin-4-yl. In another embodiment of the present invention R^(A) andR^(B) are each ethyl. In another embodiment of the present inventionR^(A) and R^(B) are taken together with the nitrogen atom to which theyare bound to form a ring structure selected from the group consisting ofpyrrolidin-1-yl, piperidin-1-yl, piperazin-1-yl, 4-methyl-piperazin-1-yland morpholin-4-yl.

In an embodiment of the present invention, Q is one or more ringstructures selected from the group consisting of formulas (a) through(h), as herein defined.

In an embodiment of the present invention, Q is (a)

In another embodiment of the present invention, Q is (b)

In an embodiment of the present invention, R⁵ is C₁₋₄alkyl. In anotherembodiment of the present invention, R⁵ is C₁₋₂alkyl. In anotherembodiment of the present invention, R⁵ is selected from the groupconsisting of tert-butyl and methyl. In another embodiment of thepresent invention, R⁵ is methyl.

In an embodiment of the present invention, R⁶ is selected from the groupconsisting of C₁₋₄alkyl and fluorinated C₁₋₄alkyl. In another embodimentof the present invention, R⁶ is selected from the group consisting oftert-butyl, trifluoromethyl and 1,1-dimethyl-2-fluoro-ethyl. In anotherembodiment of the present invention, R⁶ is selected from the groupconsisting of tert-butyl and 1,1-dimethyl-2-fluoro-ethyl. In anotherembodiment of the present invention, R⁶ is tert-butyl.

In an embodiment of the present invention, R⁷ is selected from the groupconsisting of hydrogen, chloro, fluoro, cyano, C₁₋₄alkyl and C₁₋₄alkoxy.In another embodiment of the present invention, R⁷ is selected from thegroup consisting of hydrogen, chloro, fluoro, cyano, C₁₋₂alkyl andC₁₋₂alkoxy. In another embodiment of the present invention, R⁷ isselected from the group consisting of hydrogen, chloro, fluoro, cyano,methyl and methoxy. In another embodiment of the present invention, R⁷is selected from the group consisting of hydrogen, chloro, fluoro, cyanoand methoxy. In another embodiment of the present invention, R⁷ isselected from the group consisting of chloro and cyano.

In another embodiment of the present invention, Q is (c)

wherein R⁸ and R⁹ are each independently selected from the groupconsisting of C₁₋₄alkyl. In another embodiment of the present invention,R⁸ and R⁹ are each independently selected from the group consisting ofmethyl and tert-butyl. In another embodiment of the present invention,R⁸ is methyl and R⁹ is tert-butyl.

In another embodiment of the present invention, Q is (d)

wherein R¹⁰ is C₁₋₄alkyl; and R¹¹ is selected from the group consistingof hydrogen and cyano. In another embodiment of the present invention,R¹⁰ is C₁₋₄alkyl. In another embodiment of the present invention, R¹⁰ istert-butyl. In another embodiment of the present invention, R¹¹ isselected from the group consisting of hydrogen and cyano. In anotherembodiment of the present invention, R¹¹ is hydrogen.

In another embodiment of the present invention, Q is (e)

wherein R¹² and R¹³ are each independently selected from the groupconsisting of hydrogen and C₁₋₄alkyl. In an embodiment of the presentinvention, R¹² is hydrogen. In another embodiment of the presentinvention R¹³ is C₁₋₄alkyl. In another embodiment of the presentinvention, R¹³ is tert-butyl and isopropyl. In another embodiment of thepresent invention, R¹³ is isopropyl.

In another embodiment of the present invention, Q is (f)

wherein R¹⁴ is C₁₋₄alkyl. In another embodiment of the presentinvention, R¹⁴ is tert-butyl and isopropyl. In another embodiment of thepresent invention, R¹⁴ is isopropyl.

In another embodiment of the present invention, Q is (g)

wherein R¹⁵ is C₁₋₄alkyl; and R¹⁶ is selected from the group consistingof hydrogen, chloro and bromo. In another embodiment of the presentinvention, R¹⁵ is C₁₋₄alkyl. In another embodiment of the presentinvention, R¹⁵ is tert-butyl. In another embodiment of the presentinvention, R¹⁶ is selected from the group consisting of hydrogen, chloroand bromo. In another embodiment of the present invention, R¹⁶ isselected from the group consisting of hydrogen and bromo.

In another embodiment of the present invention, Q is (h)

wherein R¹⁷ is C₁₋₄alkyl. In another embodiment of the presentinvention, R¹⁷ is C₁₋₂alkyl. In another embodiment of the presentinvention, R¹⁷ is methyl.

In an embodiment of the present invention, Q is an optionallysubstituted ring structure selected from the group consisting offormulas (a) through (h)

(a)

(b)

wherein R⁵ is C₁₋₄alkyl; R⁶ is selected from the group consisting ofC₁₋₄alkyl and fluorinated C₁₋₄alkyl; and R⁷ is selected from the groupconsisting of hydrogen, chloro, fluoro, cyano, C₁₋₂alkyl and C₁₋₂alkoxy;

(c)

wherein R⁸ and R⁹ are each independently selected from the groupconsisting of C₁₋₄alkyl;

(d)

wherein R¹⁰ is C₁₋₄alkyl; and R¹¹ is selected from the group consistingof hydrogen and cyano;

(e)

wherein R¹² and R¹³ are each independently selected from the groupconsisting of hydrogen and C₁₋₄alkyl;

(f)

wherein R¹⁴ is selected from the group consisting of C₁₋₄alkyl;

(g)

wherein R¹⁵ is C₁₋₄alkyl; and R¹⁶ is selected from the group consistingof hydrogen, chloro and bromo; and

(h)

wherein R¹⁷ is C₁₋₂alkyl.

In another embodiment of the present invention, Q is an optionallysubstituted ring structure selected from the group consisting offormulas (a) through (h)

(a)

(b)

wherein R⁵ is C₁₋₄alkyl; R⁶ is selected from the group consisting ofC₁₋₄alkyl and fluorinated C₁₋₄alkyl; and R⁷ is selected from the groupconsisting of hydrogen, chloro, fluoro, cyano, C₁₋₂alkyl and C₁₋₂alkoxy;

(c)

wherein R⁸ and R⁹ are each independently selected from the groupconsisting of C₁₋₄alkyl;

(d)

wherein R¹⁰ is C₁₋₄alkyl; and R¹¹ is selected from the group consistingof hydrogen and cyano;

(e)

wherein R¹² is hydrogen and R¹³ is selected from the group consisting ofC₁₋₄alkyl;

(f)

wherein R¹⁴ is selected from the group consisting of C₁₋₄alkyl;

(g)

wherein R¹⁵ is C₁₋₄alkyl; and R¹⁶ is selected from the group consistingof hydrogen and bromo; and

(h)

wherein R¹⁷ is C₁₋₂alkyl.

In another embodiment of the present invention, Q is selected from thegroup consisting of 1-methyl-3-tert-butyl-pyrazol-5-yl,1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-fluoro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-trifluoromethyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-methoxy-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,1-tert-butyl-pyrazol-4-yl, 1-tert-butyl-5-methyl-pyrazol-4-yl,1-methyl-3-tert-butyl-imidazol-2-yl, 3-tert-butyl-isoxazol-5-yl,3-tert-butyl-4-cyano-isoxazol-5-yl, 4-isopropyl-thien-2-yl,5-isopropyl-thien-3-yl, 4-tert-butyl-fur-2-yl,4-tert-butyl-5-bromo-fur-2-yl, and

In another embodiment of the present invention, Q is selected from thegroup consisting of 1-methyl-3-tert-butyl-pyrazol-5-yl,1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-fluoro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-tert-butyl-4-methoxy-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,3-tert-butyl-isoxazol-5-yl, 3-tert-butyl-4-cyano-isoxazol-5-yl,4-isopropyl-thien-2-yl, 5-isopropyl-thien-3-yl, 4-tert-butyl-fur-2-yl,4-tert-butyl-5-bromo-fur-2-yl and

In another embodiment of the present invention, Q is selected from thegroup consisting of 1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,3-tert-butyl-isoxazol-5-yl and

In another embodiment of the present invention, Q is selected from thegroup consisting of 1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl and1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-y. Inanother embodiment of the present invention, Q is selected from thegroup consisting of 1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl and1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl.

In an embodiment, the present invention is directed to compounds offormula (I-B)

wherein R¹, R² and R³ are as herein defined, and solvates, hydrates,tautomers and pharmaceutically acceptable salts thereof.

In an embodiment, the present invention is directed to compounds offormula (I-B) wherein R¹ is selected from the group consisting ofhydrogen, fluoro, chloro, fluorinated C₁₋₂alkyl and fluorinatedC₁₋₂alkoxy. In another embodiment, the present invention is directed tocompounds of formula (I-B) wherein R¹ is selected from the groupconsisting of hydrogen, chloro, fluoro, trifluoromethyl andtrifluoromethoxy. In another embodiment, the present invention isdirected to compounds of formula (I-B) wherein R¹ is selected from thegroup consisting of chloro, fluoro, trifluoromethyl andtrifluoromethoxy. In another embodiment, the present invention isdirected to compounds of formula (I-B) wherein R¹ is selected from thegroup consisting of chloro and trifluoromethyl.

In an embodiment, the present invention is directed to compounds offormula (I-B) wherein R² is selected from the group consisting ofhydrogen, chloro, trifluoromethyl and trifluoromethoxy. In anotherembodiment, the present invention is directed to compounds of formula(I-B) wherein R² is selected from the group consisting of hydrogen andchloro. In another embodiment, the present invention is directed tocompounds of formula (I-B) wherein R² is hydrogen.

In an embodiment, the present invention is directed to compounds offormula (I-B) wherein R³ is selected from the group consisting ofhydrogen, chloro, cyano, C₁₋₂alkyl, fluorinated C₁₋₂alkyl, C₁₋₄alkoxy,fluorinated C₁₋₂alkoxy, —O—(CH₂)₂—OH, —O—CH₂—CO₂H,—O—(CH₂)₂—O—(C₁₋₄alkyl), —O—CH₂-(fluorinated C₁₋₂alkyl),—O—(CH₂)₂—NR^(A)R^(B) and —NR^(A)R^(B); wherein R^(A) and R^(B) are eachindependently selected from the group consisting of hydrogen andC₁₋₂alkyl; alternatively R^(A) and R^(B) are taken together with thenitrogen atom to which they are bound to form a ring structure selectedfrom the group consisting of pyrrolidin-1-yl, piperidin-1-yl,piperazin-1-yl, 4-methyl-piperazin-1-yl and morpholin-4-yl. In anotherembodiment, the present invention is directed to compounds of formula(I-B) wherein R³ is selected form the group consisting of hydrogen,chloro, cyano, C₁₋₄alkoxy, —O—(CH₂)₂—OH, —O—CH₂—CO₂H,—O—(CH₂)₂—O—(C₁₋₂alkyl), —O—CH₂-(fluorinated C₁₋₂alkyl),—O—(CH₂)₂—NR^(A)R^(B), pyrrolidin-1-yl, piperidin-1-yl, piperazin-1-yl,4-methyl-piperazin-1-yl and morpholin-4-yl; wherein R^(A) and R^(B) areeach an independently selected C₁₋₂alkyl; alternatively R^(A) and R^(B)are taken together with the nitrogen atom to which they are bound toform a ring structure selected from the group consisting ofpyrrolidin-1-yl, piperidin-1-yl, 4-methyl-piperazin-1-yl andmorpholin-4-yl.

In another embodiment, the present invention is directed to compounds offormula (I-B) wherein R³ is selected from the group consisting ofhydrogen, chloro, cyano, methoxy, ethoxy, isopropoxy, —O—CH₂—CF₃,—O—(CH₂)₂—OCH₃, —O—(CH₂)₂—OH, —O—(CH₂)₂—CO₂H, pyrrolidin-1-yl,morpholin-4-yl, piperidin-1-yl, 4-methyl-piperazin-1-yl,—O—(CH₂)₂—N(CH₃)₂, —O—(CH₂)₂-(morpholin-4-yl),—O—(CH₂)₂-(pyrrolidin-1-yl) and —O—(CH₂)₂-(4-methyl-piperazin-1-yl). Inanother embodiment, the present invention is directed to compounds offormula (I-B) wherein R³ is selected from the group consisting ofhydrogen, chloro, cyano, methoxy, isopropoxy, —O—CH₂—CF₃,—O—(CH₂)₂—OCH₃, —O—(CH₂)₂—OH, pyrrolidin-1-yl, morpholin-4-yl,piperidin-1-yl, 4-methyl-piperazin-1-yl, —O—(CH₂)₂—N(CH₃)₂ and—O—(CH₂)₂-(morpholin-4-yl). In another embodiment, the present inventionis directed to compounds of formula (I-B) wherein R³ is selected fromthe group consisting of chloro, methoxy, isopropoxy, —O—CH₂—CF₃,—O—(CH₂)₂—OCH₃, —O—(CH₂)₂—OH, pyrrolidin-1-yl, morpholin-4-yl,piperidin-1-yl, 4-methyl-piperazin-1-yl and —O—(CH₂)₂-(morpholin-4-yl).In another embodiment, the present invention is directed to compounds offormula (I-B) wherein R³ is selected from the group consisting ofchloro, methoxy, isopropoxy, —O—CH₂—CF₃, —O—(CH₂)₂—OCH₃, —O—(CH₂)₂—OH,morpholin-4-yl, piperidin-1-yl and —O—(CH₂)₂-(morpholin-4-yl). Inanother embodiment, the present invention is directed to compounds offormula (I-B) wherein R³ is —OCH₃.

In an embodiment, the present invention is directed to compounds offormula (I-B) wherein Q is an optionally substituted ring structureselected from the group consisting of formulas (a) through (h)

(a)

(b)

wherein R⁵ is C₁₋₄alkyl; R⁶ is selected from the group consisting ofC₁₋₄alkyl and fluorinated C₁₋₄alkyl; and R⁷ is selected from the groupconsisting of hydrogen, chloro, fluoro, cyano, C₁₋₂alkyl and C₁₋₂alkoxy;

(c)

wherein R⁸ and R⁹ are each independently selected from the groupconsisting of C₁₋₄alkyl;

(d)

wherein R¹⁰ is C₁₋₄alkyl; and R¹¹ is selected from the group consistingof hydrogen and cyano;

(e)

wherein R¹² is hydrogen and R¹³ is selected from the group consisting ofC₁₋₄alkyl;

(f)

wherein R¹⁴ is selected from the group consisting of C₁₋₄alkyl;

(g)

wherein R¹⁵ is C₁₋₄alkyl; and R¹⁶ is selected from the group consistingof hydrogen and bromo; and

(h)

wherein R¹⁷ is C₁₋₂alkyl.

In another embodiment, the present invention is directed to compounds offormula (I-B) wherein Q is selected from the group consisting of1-methyl-3-tert-butyl-pyrazol-5-yl,1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-fluoro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-trifluoromethyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-methoxy-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,1-tert-butyl-pyrazol-4-yl, 1-tert-butyl-5-methyl-pyrazol-4-yl,1-methyl-3-tert-butyl-imidazol-2-yl, 3-tert-butyl-isoxazol-5-yl,3-tert-butyl-4-cyano-isoxazol-5-yl, 4-isopropyl-thien-2-yl,5-isopropyl-thien-3-yl, 4-tert-butyl-fur-2-yl,4-tert-butyl-5-bromo-fur-2-yl, and

In another embodiment, the present invention is directed to compounds offormula (I-B) wherein Q is selected from the group consisting of1-methyl-3-tert-butyl-pyrazol-5-yl,1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-fluoro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-tert-butyl-4-methoxy-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,3-tert-butyl-isoxazol-5-yl, 3-tert-butyl-4-cyano-isoxazol-5-yl,4-isopropyl-thien-2-yl, 5-isopropyl-thien-3-yl, 4-tert-butyl-fur-2-yl,4-tert-butyl-5-bromo-fur-2-yl and

In another embodiment, the present invention is directed to compounds offormula (I-B) wherein Q is selected from the group consisting of1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,3-tert-butyl-isoxazol-5-yl, and

In another embodiment, the present invention is directed to compounds offormula (I-B) wherein Q is selected from the group consisting of1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl and1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl. Inanother embodiment, the present invention is directed to compounds offormula (I-B) wherein Q is selected from the group consisting of1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl and1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl.

Additional embodiments of the present invention, include those whereinthe substituents for one or more of the variables defined herein (i.e.R¹, R²,

Q, etc.) are independently selected to be any individual substituent orany subset of substituents selected from the complete list as definedherein.

Representative compounds of formula (I) are listed in Table 1, below. Inanother embodiment, the present invention is directed to any singlecompound or subset of compounds selected from the representativecompounds listed in Table 1, below.

TABLE 1 Representative Compounds of Formula (I)

      Cmpd No.         R¹

        Q  1 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  2 OCF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  3 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  4 CF₃

3-tert-butyl-isoxazol-5-yl  5 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  6 CF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  7 CF₃

3-tert-butyl-isoxazol-5-yl  8 CF₃

3-tert-butyl-isoxazol-5-yl  9 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  10 CF₃

3-tert-butyl-isoxazol-5-yl  11 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  12 Cl

1-methyl-3-tert-butyl- pyrazol-5-yl  13 CF₃

3-tert-butyl-4-cyano- isoxazol-5-yl  14 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  15 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  16 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  17 Cl

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  18 Cl

 19 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  20 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  21 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  22 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  23 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  24 CF₃

1-methyl-5-tert-butyl-4- cyano-pyrazol-5-yl  25 OCF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  26 Cl

3-tert-butyl-isoxazol-5-yl  27 Cl

1-methyl-3-tert-butyl- pyrazol-5-yl  28 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  29 OCF₃

3-tert-butyl-isoxazol-5-yl  30 F

3-tert-butyl-isoxazol-5-yl  31 CF₃

3-tert-butyl-isoxazol-5-yl  32 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  33 F

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  34 CF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  35 CF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  36 F

1-methyl-3-tert-butyl- pyrazol-5-yl  37 OCF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  39 OCF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  40 CF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  41 Cl

1-methyl-3-tert-butyl- pyrazol-5-yl  42 F

1-methyl-3-tert-butyl- pyrazol-5-yl  43 F

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  44 F

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  45 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  46 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  47 H

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  48 F

1-methyl-3-trifluoromethyl- 4-chloro-pyrazol-5-yl  49 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  50 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  51 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  52 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  53 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  54 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  55 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  56 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  57 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  58 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  59 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  60 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  61 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  62 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  63 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  64 CF₃

3-tert-butyl-4-cyano- isoxazol-5-yl  65 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  66 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  67 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  68 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  70 CF₃

3-tert-butyl-4-cyano- isoxazol-5-yl  71 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  72 CF₃

 73 CF₃

3-tert-butyl-isoxazol-5-yl  74 CF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  75 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  76 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  77 F

1-methyl-3-tert-butyl-4- fluoro-pyrazol-5-yl  78 CF₃

1-methyl-3-tert-butyl-4- fluoro-pyrazol-5-yl  79 CF₃

1-methyl-3-tert-butyl-4- methoxy-pyrazol-5-yl  80 CF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  81 CF₃

1-methyl-3-tert-butyl- pyrazol-5-yl  83 Cl

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  84 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  85 Cl

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  86 CF₃

1-methyl-3-tert-butyl-4- cyano-pyrazol-5-yl  87 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  88 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  89 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  90 OCF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  91 F

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  92 F

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  93 OCF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  94 OCF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  95 CF₃

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  96 F

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl  97 Cl

1-methyl-3- (1,1-dimethyl-2- fluoro-ethyl)-4-chloro- pyrazol-5-yl  98 Cl

5-isopropyl-thien-3-yl  99 Cl

4-tert-butyl-fur-2-yl 100 Cl

1-tert-butyl-5-methyl- pyrazol-4-yl 101 Cl

4-tert-butyl-5- bromo-fur-2-yl 102 Cl

1-tert-butyl-pyrazol-4-yl 105 Cl

4-isopropyl-thien-2-yl 106 Cl

4-tert-butyl-5- bromo-fur-2-yl 107 Cl

1-tert-butyl-5-methyl- pyrazol-4-yl 108 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl 109 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl 110 Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl 111 Cl

1-methyl-3-tert-butyl- imidazol-2-yl 112 CF₃

1-methyl-3-tert-butyl- pyrazol-5-yl

      Cmpd No.         R¹         R²

        Q 103 Cl Cl

1-methyl-3-tert-butyl-4- chloro-pyrazol-5-yl

In another embodiment, the present invention is directed to a compoundof formula (I) that exhibits a % Inhibition at 0.2 μM of greater than orequal to about 10% (preferably greater than or equal to about 25%, morepreferably greater than or equal to about 80%, more preferably greaterthan or equal to about 80%), also preferred are greater than or equal to20% at 0.5 μM, and further preferred are greater than or equal to 30% at1 μM, as measured according to the procedure described in BiologicalExample 1, which follows herein.

In an embodiment, the present invention is directed to a compound offormula (I) which exhibits an IC₅₀ of less than or 0.100 μM, preferablyless than or equal to about 0.05 μM, more preferably less than or equalto about 0.025 μM, more preferably less than or equal to about 0.01 μM,more preferably less than or equal to about 0.005 μM, as measuredaccording to the procedure described in Biological Example 1, whichfollows herein.

As used herein, the term “alkyl” whether used alone or as part of asubstituent group, include straight and branched chains. For example,alkyl radicals include methyl, ethyl, propyl, isopropyl, butyl,isobutyl, sec-butyl, tert-butyl, pentyl and the like. Unless otherwisenoted, the notation “C_(X-Y)alkyl” wherein X and Y are integers shallindicate an alkyl group as herein define containing between X and Ycarbon atoms. For example, the term “C₁₋₄alkyl” shall include straightand branched alkyl chains containing between one to four carbon atoms.

As used herein, unless otherwise noted, “alkoxy” shall denote an oxygenether radical of the above described straight or branched chain alkylgroups. For example, methoxy, ethoxy, n-propoxy, sec-butoxy,tert-butoxy, n-hexyloxy and the like. Similarly, the term“C_(X-Y)alkoxy” wherein X and Y are integers shall indicate an alkoxygroup as herein define containing between X and Y carbon atoms. Forexample, the term “C₁₋₄alkoxy” shall include straight and branchedalkoxy groups containing one to four carbon atoms, more particularly,methoxy and ethoxy.

As used herein, unless otherwise noted, the term “fluorinated C₁₋₄alkyl”shall mean any C₁₋₄alkyl group as defined above substituted with atleast one fluoro atom. Suitable examples include but are not limited to—CF₃, —CH₂—CF₃, —CF₂—CF₂—CF₂—CF₃, —CCl₃, CH₂CCl₃, and the like.Similarly, as used herein, unless otherwise noted, the term “fluorinatedC₁₋₄alkoxy” shall mean any C₁₋₄alkyl group as defined above substitutedwith at least one fluoro atom. Suitable examples include but are notlimited to —OCF₃, —OCH₂—CF₃, —OCF₂—CF₂—CF₂—CF₃, and the like.

When a particular group is “substituted”, that group may have one ormore substituents, preferably from one to five substituents, morepreferably from one to three substituents, most preferably from one totwo substituents, independently selected from the list of substituents.

With reference to substituents, the term “independently” means that whenmore than one of such substituents is possible, such substituents may bethe same or different from each other.

As used herein, the notation “*” shall denote the presence of astereogenic center. Where the compounds according to this invention haveat least one chiral center, they may accordingly exist as enantiomers.Where the compounds possess two or more chiral centers, they mayadditionally exist as diastereomers. It is to be understood that allsuch isomers and mixtures thereof are encompassed within the scope ofthe present invention. Preferably, wherein the compound is present as anenantiomer, the enantiomer is present at an enantiomeric excess ofgreater than or equal to about 80%, more preferably, at an enantiomericexcess of greater than or equal to about 90%, more preferably still, atan enantiomeric excess of greater than or equal to about 95%, morepreferably still, at an enantiomeric excess of greater than or equal toabout 98%, most preferably, at an enantiomeric excess of greater than orequal to about 99%. Similarly, wherein the compound is present as adiastereomer, the diastereomer is present at an diastereomeric excess ofgreater than or equal to about 80%, more preferably, at andiastereomeric excess of greater than or equal to about 90%, morepreferably still, at an diastereomeric excess of greater than or equalto about 95%, more preferably still, at an diastereomeric excess ofgreater than or equal to about 98%, most preferably, at andiastereomeric excess of greater than or equal to about 99%.

Furthermore, some of the crystalline forms for the compounds of thepresent invention may exist as polymorphs and as such are intended to beincluded in the present invention. In addition, some of the compounds ofthe present invention may form solvates with water (i.e., hydrates) orcommon organic solvents, and such solvates are also intended to beencompassed within the scope of this invention.

Under standard nomenclature used throughout this disclosure, theterminal portion of the designated side chain is described first,followed by the adjacent functionality toward the point of attachment.Thus, for example, a “phenylC₁-C₆alkylaminocarbonylC₁-C₆alkyl”substituent refers to a group of the formula

Abbreviations used in the specification, particularly the Schemes andExamples, are as follows:

AcOH or HOAc = Acetic Acid BF₃•OEt₂ = Boron Trifluoride Etheratetert-BuOH = tert-Butanol DCM = Dichloromethane DCE = 1,2-DichloroethaneDDQ = 2,3-Dichloro-5,6-dicyanobenzoquinone Dess-Martin Periodinane =[1,1,1-Triacetoxy-1,1-dihydro-1,2- benziodoxol-3-3(1H)-one] DIEA orDIPEA = Diisopropylethylamine DMA = Dimethylacetamide DME =1,2-Dimethoxyethane DMF = N,N-Dimethylformamide DMFDMA =N,N-dimethylformamide dimethylacetal DMSO = Dimethylsulfoxide Et₂O =Diethyl Ether EtOAc = Ethyl Acetate EtOH = Ethanol FBS = Fetal BovineSerum HPLC = High Pressure Liquid Chromatography IPA = Isopropanol KOMe= Potassium Methoxide MeOH = Methanol MsOH = Methanesulfonic acid MTBE =Methyl tert-butyl Ether NaOMe = Sodium Methoxide NaOEt = Sodium EthoxideNMP = N-Methyl-2-pyrrolidone Pd/C = Palladium on Carbon CatalystPd(OAc)₂ = Palladium (II) acetate PdCl₂dppf or (dppf)PdCl₂ =[1,1′-Bis(diphenylphosphino)ferrocene] dichloropalladium(II).PdCl₂dPPf•DCM or = (1,1′-Bis(diphenylphosphino ferrocene)(dppf)PdCl₂•DCM dichloropalladium(II) dichloromethane (1:1) adduct (orcomplex) Pd₂(dba)₃ = Tris(dibenzylidene acetone)dipalladium(0) Pd(PPh₃)₄= Tetrakis(triphenylphosphine) palladium (0) Pt(Sulfided)/C = SulfidedPlatinum on Carbon Catalyst TEA = Triethylamine TFA = TrifluoroaceticAcid THF = Tetrahydrofuran TLC = Thin Layer Chromatography TRPM8 =Transient Receptor Potential M8 channel

As used herein, unless otherwise noted, the terms “treating”,“treatment” and the like, shall include the management and care of asubject or patient (preferably mammal, more preferably human) for thepurpose of combating a disease, condition or disorder and includes theadministration of a compound of the present invention to prevent theonset of the symptoms or complications, alleviate the symptoms orcomplications or eliminate the disease, condition or disorder.

As used herein, unless otherwise noted, the term “prevention” shallinclude (a) reduction in the frequency of one or more symptoms; (b)reduction in the severity of one or more symptoms; (c) delay oravoidance of the development of additional symptoms; and/or (d) delay oravoidance of the development of the disorder or condition.

One skilled in the art will recognize that wherein the present inventionis directed to methods of prevention, a subject in need thereof (i.e., asubject in need of prevention) shall include any subject or patient(preferably a mammal, more preferably a human) who has experienced orexhibited at least one symptom of the disorder, disease or condition tobe prevented. Further, a subject in need thereof may additionally be asubject (preferably a mammal, more preferably a human) who has notexhibited any symptoms of the disorder, disease or condition to beprevented, but who has been deemed by a physician, clinician or othermedical professional to be at risk of developing said disorder, diseaseor condition. For example, the subject may be deemed at risk ofdeveloping a disorder, disease or condition (and therefore in need ofprevention or preventive treatment) as a consequence of the subject'smedical history, including but not limited to family history,pre-disposition, co-existing (comorbid) disorders or conditions, genetictesting and the like.

The term “subject” as used herein, refers to an animal, preferably amammal, most preferably a human, who has been the object of treatment,observation or experiment. Preferably, the subject has experiencedand/or exhibited at least one symptom of the disease or disorder to betreated and/or prevented.

The term “therapeutically effective amount” as used herein, means thatamount of active compound or pharmaceutical agent that elicits thebiological or medicinal response in a tissue system, animal or humanthat is being sought by a researcher, veterinarian, medical doctor orother clinician, which includes alleviation of the symptoms of thedisease or disorder being treated.

As used herein, the term “composition” is intended to encompass aproduct comprising the specified ingredients in the specified amounts,as well as any product which results, directly or indirectly, fromcombinations of the specified ingredients in the specified amounts.

For the purposes of the present invention, the term “antagonist” is usedto refer to a compound capable of producing, depending on thecircumstance, a functional antagonism of an ion channel, including butnot limited to competitive antagonists, non-competitive antagonists,desensitizing agonists and partial agonists.

For purposes of the present invention, the term “TRPM8-modulated” isused to refer to the condition of being affected by the modulation ofthe TRPM8 channel, including but not limited to the state of beingmediated by the TRPM8 channel.

As antagonists of the TRPM8 channel, the compounds of formula (I) areuseful in methods for treating and preventing a disease, a syndrome, acondition or a disorder in a subject, including an animal, a mammal anda human in which the disease, the syndrome, the condition or thedisorder is affected by the modulation of TRPM8 channels. Such methodscomprise, consist of and consist essentially of administering to asubject, including an animal, a mammal and a human in need of suchtreatment or prevention, a therapeutically effective amount of acompound, salt or solvate of formula (I). In particular, the compoundsof formula (I) are useful for preventing or treating pain or diseases,syndromes, conditions or disorders causing such pain or pulmonary orvascular dysfunction. More particularly, the compounds of formula (I)are useful for preventing or treating inflammatory pain, inflammatoryhypersensitivity conditions, neuropathic pain, anxiety, depression, andcardiovascular disease aggravated by cold, including peripheral vasculardisease, vascular hypertension, pulmonary hypertension, Raynaud'sdisease, and coronary artery disease, by administering to a subject inneed thereof a therapeutically effective amount of a compound of formula(I).

Examples of inflammatory pain include pain due to a disease, condition,syndrome or disorder, including inflammatory bowel disease, visceralpain, migraine, post operative pain, osteoarthritis, rheumatoidarthritis, back pain, lower back pain, joint pain, abdominal pain, chestpain, labor, musculoskeletal diseases, skin diseases, toothache,pyresis, burn, sunburn, snake bite, venomous snake bite, spider bite,insect sting, neurogenic bladder, interstitial cystitis, urinary tractinfection, rhinitis, contact dermatitis/hypersensitivity, itch, eczema,pharyngitis, mucositis, enteritis, irritable bowel syndrome,cholecystitis, pancreatitis, postmastectomy pain syndrome, menstrualpain, endometriosis, sinus headache, tension headache, or arachnoiditis.

One type of inflammatory pain is inflammatory hyperalgesia, which can befurther distinguished as inflammatory somatic hyperalgesia orinflammatory visceral hyperalgesia. Inflammatory somatic hyperalgesiacan be characterized by the presence of an inflammatory hyperalgesicstate in which a hypersensitivity to thermal, mechanical and/or chemicalstimuli exists. Inflammatory visceral hyperalgesia can also becharacterized by the presence of an inflammatory hyperalgesic state, inwhich an enhanced visceral irritability exists. Examples of inflammatoryhyperalgesia include a disease, syndrome, condition, disorder, or painstate including inflammation, osteoarthritis, rheumatoid arthritis, backpain, joint pain, abdominal pain, musculoskeletal diseases, skindiseases, post operative pain, headaches, toothache, burn, sunburn,insect sting, neurogenic bladder, urinary incontinence, interstitialcystitis, urinary tract infection, cough, asthma, chronic obstructivepulmonary disease, rhinitis, contact dermatitis/hypersensitivity, itch,eczema, pharyngitis, enteritis, irritable bowel syndrome, inflammatorybowel diseases including Crohn's Disease or ulcerative colitis.

One embodiment of the present invention is directed to a method fortreating inflammatory somatic hyperalgesia in which a hypersensitivityto thermal, mechanical and/or chemical stimuli exists, comprising thestep of administering to a mammal in need of such treatment atherapeutically effective amount of a compound, salt or solvate offormula (I).

A further embodiment of the present invention is directed to a methodfor treating inflammatory visceral hyperalgesia in which an enhancedvisceral irritability exists, comprising, consisting of, and/orconsisting essentially of the step of administering to a subject in needof such treatment a therapeutically effective amount of a compound, saltor solvate of formula (I).

A further embodiment of the present invention is directed to a methodfor treating neuropathic cold allodynia in which a hypersensitivity to acooling stimuli exists, comprising, consisting of, and/or consistingessentially of the step of administering to a subject in need of suchtreatment a therapeutically effective amount of a compound, salt orsolvate of formula (I).

Examples of a neuropathic pain include pain due to a disease, syndrome,condition or disorder, including cancer, neurological disorders, spineand peripheral nerve surgery, brain tumor, traumatic brain injury (TBI),spinal cord trauma, chronic pain syndrome, fibromyalgia, chronic fatiguesyndrome, neuralgias (e.g., trigeminal neuralgia, glossopharyngealneuralgia, postherpetic neuralgia and causalgia), lupus, sarcoidosis,peripheral neuropathy, bilateral peripheral neuropathy, diabeticneuropathy, central pain, neuropathies associated with spinal cordinjury, stroke, amyotrophic lateral sclerosis (ALS), Parkinson'sdisease, multiple sclerosis, sciatic neuritis, mandibular jointneuralgia, peripheral neuritis, polyneuritis, stump pain, phantom limbpain, bony fractures, oral neuropathic pain, Charcot's pain, complexregional pain syndrome I and II (CRPS I/II), radiculopathy,Guillain-Barre syndrome, meralgia paresthetica, burning-mouth syndrome,optic neuritis, postfebrile neuritis, migrating neuritis, segmentalneuritis, Gombault's neuritis, neuronitis, cervicobrachial neuralgia,cranial neuralgia, geniculate neuralgia, glossopharyngial neuralgia,migrainous neuralgia, idiopathic neuralgia, intercostals neuralgia,mammary neuralgia, Morton's neuralgia, nasociliary neuralgia, occipitalneuralgia, red neuralgia, Sluder's neuralgia, splenopalatine neuralgia,supraorbital neuralgia, vulvodynia, or vidian neuralgia.

One type of neuropathic pain is neuropathic cold allodynia, which can becharacterized by the presence of a neuropathy-associated allodynic statein which a hypersensitivity to cooling stimuli exists. Examples ofneuropathic cold allodynia include allodynia due to a disease,condition, syndrome, disorder or pain state including neuropathic pain(neuralgia), pain arising from spine and peripheral nerve surgery ortrauma, traumatic brain injury (TBI), trigeminal neuralgia, postherpeticneuralgia, causalgia, peripheral neuropathy, diabetic neuropathy,central pain, stroke, peripheral neuritis, polyneuritis, complexregional pain syndrome I and II (CRPS I/II) and radiculopathy.

As used herein, unless otherwise noted, the term “cardiovascular diseaseaggravated by cold” shall include peripheral vascular disease, vascularhypertension, pulmonary hypertension, Raynaud's disease and coronaryartery disease.

In an embodiment, the present invention is directed to methods for thetreatment of inflammatory pain, inflammatory hypersensitivity conditionor neuropathic pain, comprising administering to a subject in needthereof a therapeutically effective amount of a compound of formula (I).

In an embodiment of the present invention, the inflammatory pain is paindue to inflammatory bowel disease, visceral pain, migraine, postoperative pain, osteoarthritis, rheumatoid arthritis, back pain, lowerback pain, joint pain, abdominal pain, chest pain, labor,musculoskeletal diseases, skin diseases, toothache, pyresis, burn,sunburn, snake bite, venomous snake bite, spider bite, insect sting,neurogenic bladder, interstitial cystitis, urinary tract infection,rhinitis, contact dermatitis/hypersensitivity, itch, eczema,pharyngitis, mucositis, enteritis, irritable bowel syndrome,cholecystitis, pancreatitis, postmastectomy pain syndrome, menstrualpain, endometriosis, sinus headache, tension headache, or arachnoiditis.Preferably, the inflammatory pain is inflammatory hyperalgesia.

In another embodiment of the present invention, the inflammatoryhyperalgesia is inflammatory somatic hyperalgesia or inflammatoryvisceral hyperalgesia.

In another embodiment, the present invention is directed to methods forthe treatment of inflammatory hyperplasia, wherein the inflammatoryhyperalgesia is due to inflammation, osteoarthritis, rheumatoidarthritis, back pain, joint pain, abdominal pain, musculoskeletaldiseases, skin diseases, post operative pain, headaches, fibromyalgia,toothache, burn, sunburn, insect sting, neurogenic bladder, urinaryincontinence, interstitial cystitis, urinary tract infection, cough,asthma, chronic obstructive pulmonary disease, rhinitis, contactdermatitis/hypersensitivity, itch, eczema, pharyngitis, enteritis,irritable bowel syndrome, Crohn's Disease, or ulcerative colitis.

In another embodiment, the present invention is directed to methods oftreating inflammatory hypersensitivity conditions, wherein theinflammatory hypersensitivity condition is urinary incontinence, benignprostatic hypertrophy, cough, asthma, rhinitis, nasal hypersensitivity,itch, contact dermatitis, dermal allergy, or chronic obstructivepulmonary disease.

In another embodiment, the present invention is directed to methods forthe treatment of neuropathic pain, wherein the neuropathic pain is dueto cancer, a neurological disorder, spine or peripheral nerve surgery, abrain tumor, traumatic brain injury (TBI), spinal cord trauma, a chronicpain syndrome, fibromyalgia, chronic fatigue syndrome, a neuralgia,lupus, sarcoidosis, peripheral neuropathy, bilateral peripheralneuropathy, diabetic neuropathy, central pain, neuropathies associatedwith spinal cord injury, stroke, ALS, Parkinson's disease, multiplesclerosis, sciatic neuritis, mandibular joint neuralgia, peripheralneuritis, polyneuritis, stump pain, phantom limb pain, a bony fracture,oral neuropathic pain, Charcot's pain, complex regional pain syndrome Iand II (CRPS I/II), radiculopathy, Guillain-barre syndrome, meralgiaparesthetica, burning-mouth syndrome, optic neuritis, postfebrileneuritis, migrating neuritis, segmental neuritis, Gombault's neuritis,neuronitis, cervicobrachial neuralgia, cranial neuralgia, geniculateneuralgia, glossopharyngial neuralgia, migrainous neuralgia, idiopathicneuralgia, intercostals neuralgia, mammary neuralgia, Morton'sneuralgia, nasociliary neuralgia, occipital neuralgia, red neuralgia,Sluder's neuralgia, splenopalatine neuralgia, supraorbital neuralgia,vulvodynia or vidian neuralgia. Preferably, the neuropathic pain isneuropathic cold allodynia or neuralgia. Preferably, the neuralgia istrigeminal neuralgia, glossopharyngeal neuralgia, postherpeticneuralgia, or causalgia.

In another embodiment, the present invention is directed to methods forthe treatment of neuropathic cold allodynia, wherein the neuropathiccold allodynia is pain arising from spine and peripheral nerve surgeryor trauma, traumatic brain injury (TBI), trigeminal neuralgia,postherpetic neuralgia, causalgia, peripheral neuropathy, diabeticneuropathy, central pain, stroke, peripheral neuritis, polyneuritis,complex regional pain syndrome I and II (CRPS I/II), or radiculopathy.

In another embodiment, the present invention is directed to methods forthe treatment of anxiety, wherein the anxiety is social anxiety, posttraumatic stress disorder, phobias, social phobia, special phobias,panic disorder, obsessive compulsive disorder, acute stress disorder,separation anxiety disorder, or generalized anxiety disorder.

In another embodiment, the present invention is directed to methods forthe treatment of depression wherein the depression is major depression,bipolar disorder, seasonal affective disorder, post natal depression,manic depression, or bipolar depression.

In another embodiment, the present invention is directed to a method forthe treatment of inflammatory somatic hyperalgesia in which ahypersensitivity to thermal stimuli exists. In another embodiment, thepresent invention is directed to a method for the treatment ofinflammatory visceral hyperalgesia in which an enhanced visceralirritability exists. In another embodiment, the present invention isdirected to a method for the treatment of neuropathic cold allodynia inwhich a hypersensitivity to cooling stimuli exists.

In another embodiment, the present invention is directed to a method forthe treatment of cardiovascular disease aggravated by cold, includingperipheral vascular disease, vascular hypertension, pulmonaryhypertension, Raynaud's disease and coronary artery disease.

In another embodiment, the present invention is directed to methods forthe treatment and/or prevention of migraine, post herpetic neuralgia,post traumatic neuralgia, post chemotherapy neuralgia, complex regionalpain syndrome I and II (CRPS I/II), fibromyalgia, inflammatory boweldisease, pruritis, asthma, chronic obstructive pulmonary disease,toothache, bone pain or pyresis in a mammal, which method comprisesadministering to a mammal in need of such treatment or prevention atherapeutically effective amount of a TRPM8 antagonist.

In another embodiment, the present invention is directed to methods forthe treatment and/or prevention of hypertension, peripheral vasculardisease, Raynaud's disease, reperfusion injury or frostbite in a mammal,which method comprises administering to a mammal in need of suchtreatment or prevention a therapeutically effective amount of a TRPM8antagonist.

In yet another embodiment, the present invention is directed to methodsfor accelerating postert-anesthetic recovery or post hypothermiarecovery in a mammal, which method comprises administering to a mammalin need of such treatment a therapeutically effective amount of a TRPM8antagonist.

As more extensively provided in this written description, terms such as“reacting” and “reacted” are used herein in reference to a chemicalentity that is any one of: (a) the actually recited form of suchchemical entity, and (b) any of the forms of such chemical entity in themedium in which the compound is being considered when named.

One skilled in the art will recognize that, where not otherwisespecified, the reaction step(s) is performed under suitable conditions,according to known methods, to provide the desired product. One skilledin the art will further recognize that, in the specification and claimsas presented herein, wherein a reagent or reagent class/type (e.g. base,solvent, etc.) is recited in more than one step of a process, theindividual reagents are independently selected for each reaction stepand may be the same or different from each other. For example whereintwo steps of a process recite an organic or inorganic base as a reagent,the organic or inorganic base selected for the first step may be thesame or different than the organic or inorganic base of the second step.Further, one skilled in the art will recognize that wherein a reactionstep of the present invention may be carried out in a variety ofsolvents or solvent systems, said reaction step may also be carried outin a mixture of the suitable solvents or solvent systems. One skilled inthe art will further recognize that wherein two consecutive reaction orprocess steps are run without isolation of the intermediate product(i.e. the product of the first of the two consecutive reaction orprocess steps), then the first and second reaction or process steps maybe run in the same solvent or solvent system; or alternatively may berun in different solvents or solvent systems following solvent exchange,which may be completed according to known methods.

To provide a more concise description, some of the quantitativeexpressions given herein are not qualified with the term “about”. It isunderstood that whether the term “about” is used explicitly or not,every quantity given herein is meant to refer to the actual given value,and it is also meant to refer to the approximation to such given valuethat would reasonably be inferred based on the ordinary skill in theart, including approximations due to the experimental and/or measurementconditions for such given value.

To provide a more concise description, some of the quantitativeexpressions herein are recited as a range from about amount X to aboutamount Y. It is understood that wherein a range is recited, the range isnot limited to the recited upper and lower bounds, but rather includesthe full range from about amount X through about amount Y, or any rangetherein.

Examples of suitable solvents, bases, reaction temperatures, and otherreaction parameters and components are provided in the detaileddescriptions which follow herein. One skilled in the art will recognizethat the listing of said examples is not intended, and should not beconstrued, as limiting in any way the invention set forth in the claimswhich follow thereafter.

As used herein, unless otherwise noted, the term “leaving group” shallmean a charged or uncharged atom or group which departs during asubstitution or displacement reaction. Suitable examples include, butare not limited to, Br, Cl, I, mesylate, tosylate, triflate and thelike.

During any of the processes for preparation of the compounds of thepresent invention, it may be necessary and/or desirable to protectsensitive or reactive groups on any of the molecules concerned. This maybe achieved by means of conventional protecting groups, such as thosedescribed in Protective Groups in Organic Chemistry, ed. J. F. W.McOmie, Plenum Press, 1973; and T. W. Greene & P. G. M. Wuts, ProtectiveGroups in Organic Synthesis, John Wiley & Sons, 1991. The protectinggroups may be removed at a convenient subsequent stage using methodsknown from the art. As used herein, unless otherwise noted, the term“nitrogen protecting group” shall mean a group which may be attached toa nitrogen atom to protect said nitrogen atom from participating in areaction and which may be readily removed following the reaction.Suitable nitrogen protecting groups include, but are not limited tocarbamates—groups of the formula —C(O)O—R wherein R is for examplemethyl, ethyl, tert-butyl, benzyl, phenylethyl, CH₂═CH—CH₂—, and thelike; amides—groups of the formula —C(O)—R′ wherein R′ is for examplemethyl, phenyl, trifluoromethyl, and the like; N-sulfonylderivatives—groups of the formula —SO₂+R″ wherein R″ is for exampletolyl, phenyl, trifluoromethyl, 2,2,5,7,8-pentamethylchroman-6-yl-,2,3,6-trimethyl-4-methoxybenzene, and the like; and benzylic groups suchas benzyl, 4-methoxybenzyl, 2,4-dimethoxybenzyl, and the like. Othersuitable nitrogen protecting groups may be found in texts such as T. W.Greene & P. G. M. Wuts, Protective Groups in Organic Synthesis, JohnWiley & Sons, 1991.

Where the processes for the preparation of the compounds according tothe invention give rise to mixture of stereoisomers, these isomers maybe separated by conventional techniques such as preparativechromatography. The compounds may be prepared in racemic form, orindividual enantiomers may be prepared either by enantiospecificsynthesis or by resolution. The compounds may, for example, be resolvedinto their component enantiomers by standard techniques, such as theformation of diastereomeric pairs by salt formation with an opticallyactive acid, such as (−)-di-p-toluoyl-D-tartaric acid and/or(+)-di-p-toluoyl-L-tartaric acid followed by fractional crystallizationand regeneration of the free base. The compounds may also be resolved byformation of diastereomeric esters or amides, followed bychromatographic separation and removal of the chiral auxiliary.Alternatively, the compounds may be resolved using a chiral HPLC column.

Additionally, chiral HPLC against a standard may be used to determinepercent enantiomeric excess (% ee). The enantiomeric excess may becalculated as follows[(Rmoles−Smoles)/(Rmoles+Smoles)]×100%

where Rmoles and Smoles are the R and S mole fractions in the mixturesuch that Rmoles+Smoles=1. The enantiomeric excess may alternatively becalculated from the specific rotations of the desired enantiomer and theprepared mixture as follows:ee=([α−obs]/[α−max])×100.

One embodiment of the present invention is directed to a compositioncomprising the dextrorotatory enantiomer of a compound of formula (I)wherein said composition is substantially free from the levorotatoryisomer of said compound. In the present context, substantially freemeans less than 25%, preferably less than 10%, more preferably less than5%, even more preferably less than 2% and even more preferably less than1% of the levorotatory isomer calculated as.

${\%\mspace{14mu}{dextrorotatory}} = {\frac{\left( {{mass}\mspace{14mu}{dextrorotatory}} \right)}{\left( {{mass}\mspace{14mu}{dextrorotatory}} \right) + \left( {{mass}\mspace{14mu}{levorotatory}} \right)} \times 100}$

Another embodiment of the present invention is a composition comprisingthe levorotatory enantiomer of a compound of formula (I) wherein saidcomposition is substantially free from the dextrorotatory isomer of saidcompound. In the present context, substantially free from means lessthan 25%, preferably less than 10%, more preferably less than 5%, evenmore preferably less than 2% and even more preferably less than 1% ofthe dextrorotatory isomer calculated as

${\%\mspace{14mu}{levorotatory}} = {\frac{\left( {{mass}\mspace{14mu}{levorotatory}} \right)}{\left( {{mass}\mspace{14mu}{dextrorotatory}} \right) + \left( {{mass}\mspace{14mu}{levorotatory}} \right)} \times 100.}$General Synthetic Methods

Compounds of formula (I) wherein

is selected from the group consisting of

may be prepared as described in Scheme 1, below.

Accordingly, a suitably substituted compound of formula (IV), wherein 12is a suitably selected leaving group such as chloro, bromo, and the likeand wherein L¹ is a suitably selected leaving group such as chloro,bromo, triflate, and the like, a known compound or compound prepared byknown methods, is reacted with a suitably selected nucleophilic reagent;according to known methods; to yield the corresponding compound offormula (V).

More particularly, for the preparation of a compound of formula (V)wherein R³ is —NR^(A)R^(B), the compound of formula (IV) is reacted witha suitably substituted amine of the formula NHR^(A)R^(B), a knowncompound or compound prepared by known methods; in the presence of asuitably selected base such as K₂CO₃, Na₂CO₃, and the like; in asuitably selected organic solvent such as DMF, NMP, DMA, and the like.For the preparation of a compound of formula (V) wherein R³ is cyano,the compound of formula (IV) is reacted with, for example, NaCN, CuCN,and the like; in a suitably selected organic solvent such as NMP, DMF,and the like. For the preparation of a compound of formula (V) whereinR³ is selected from the group consisting of C₁₋₄alkoxy, fluorinatedC₁₋₄alkoxy, —O—(CH₂)₂—OH, —O—(CH₂)₂—O—(C₁₋₄alkyl), —O—CH₂-(fluorinatedC₁₋₂alkyl) and —O—(CH₂)₂—NR^(A)R^(B), the compound of formula (IV) isreacted with, for example, the corresponding R³—Na or R³—K reagent, aknown compound or compound prepared by known methods, as would bereadily recognized by one skilled in the art.

One skilled in the art will recognize that compounds of formula (V)wherein R³ is —O—CH₂—C(O)OH may be prepared by further oxidizing acorresponding compound of formula (V) wherein R³ is —O—(CH₂)₂—OH,according to known methods, to convert the —O—CH₂—CH₂—OH to thecorresponding aldehyde (i.e. converting —O—CH₂—CH₂—OH to thecorresponding —O—CH₂—CHO). For example, a suitably substituted compoundof formula (V) wherein R³ is —O—(CH₂)₂—OH may be reacted with a suitablyselected reagent such as Dess-Martin periodinane, oxalyl chloride/DMSO,and the like, according to known methods. The resulting aldehydecompound may then be further oxidized by, for example, reacting with asuitably selected reagent such as NaClO₂, and the like, in the presenceof 2-methyl-2-butene, and the like; to yield the corresponding compoundof formula (V) wherein the aldehyde is converted to the correspondingcarboxyl acid (i.e. converting the —O—(CH₂)₂—CHO group to thecorresponding —O—CH₂—C(O)OH group).

Compounds of formula (V) wherein R³ is selected from the groupconsisting of hydrogen, chloro, C₁₋₄alkyl and fluorinated C₁₋₄alkyl areknown compounds, commercially available compounds or compounds preparedby known methods and as such are selected as the starting material.(Thus, for said compounds, the transformation from a compound of formula(IV) is not necessary).

The compound of formula (V), is reacted with a suitably substitutedcompound of formula (VI), wherein M¹ is a suitably selected activatinggroup such as (a) boronic acid (—B(OH)₂), (b) a suitably selectedboronic ester such as pinacolatoboryl, neopentylglycolatoboryl, and thelike, (c) a suitably selected trialkylstannyl such as tri(n-butyl)tin,and the like, (d) a suitably selected trialkylsilyl such astriallylsilyl, and the like or (e) a suitably selected aryldialkylsilylsuch as 2-(hydroxymethyl)phenyl-dimethylsilyl, and the like, a knowncompound or compound prepared by known methods, under suitable couplingconditions, to yield the corresponding compound of formula (VII).

For example, wherein compound of formula (VI), where M¹ is —B(OH)₂ or asuitably selected boronic ester, the compound of formula (V) is reactedwith the compound of formula (VI) under Suzuki coupling conditions, moreparticularly in the presence of a suitably selected palladium catalystsuch as palladium (II) acetate, palladium (II) chloride,bis(acetonitrile)-dichloro-palladium(II), allylpalladium (II) chloridedimer, tris(dibenzylidineacetone) dipalladium (0) (Pd₂(dba)₃),2-(di-tert-butylphosphino)biphenyl,dichloro-bis(di-tert-butylphenylphosphine)-palladium (II),(1,1′-bis(di-tert-butylphosphino)ferrocene) palladium (II) chloride[1,1′-bis-(diphenylphosphino)-ferrocene]-palladium (II) dichloridedichloromethane adduct ((dppf)PdCl₂.DCM),2-(dicyclohexylphosphino)-2′,4′,6′-tri-iso-propyl-1,1′-biphenyl,tetrakis(triphenylphosphine) palladium(0) (Pd(PPh₃)₄), and the like;optionally in the presence of a suitably selected added ligand such astriphenylphosphine, tri-o-tolylphosphine, tri(tert-butyl)-phosphine,tricyclohexylphosphine, 1,1′-bis(diphenylphosphino)-ferrocene,bis[2-(diphenyl-phosphino)phenyl]ether,2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl, tris(2-furyl)phosphine,1-butyl-3-methylimidazolium hexafluorophosphate, and the like; in thepresence of a suitably selected inorganic base such as cesium carbonate,potassium carbonate, sodium carbonate, cesium fluoride, potassiumfluoride, tetrabutylammonium fluoride, potassium tert-butoxide, sodiumtert-butoxide, aqueous sodium hydroxide, aqueous sodium bicarbonate;potassium phosphate or preferably aqueous sodium carbonate; in asuitably selected organic solvent such as ethanol, THF, DMF, toluene,benzene, DME, 1,4-dioxane, and the like or a mixture of organicsolvents, for example in a mixture of toluene and ethanol; preferably ata suitable temperature in the range of from about room temperature toabout 180° C.

The compound of formula (VII) is reacted with a suitably substitutedcompound of formula (VIII), wherein L³ is a suitably selected leavinggroup such as chloro, bromo, fluoro, and the like, preferably chloro, aknown compound or compound prepared by known methods; in the presence ofa suitably selected inorganic base such as sodium hydride, potassiumhydride, potassium tert-butoxide, n-butyllithium, and the like,preferably sodium hydride; in a suitably selected organic solvent suchas DMF, THF, and the like, to yield the corresponding compound offormula (IX).

The compound of formula (IX) is reacted with a suitably selectedreducing agent such as hydrogen in the presence of a catalyst such aspalladium on carbon, hydrogen in the presence of a catalyst such asplatinum on carbon doped with vanadium, tin (II) chloride,Pt(sulfide)/C, and the like; in a suitably selected organic solvent suchas methanol, ethanol, THF, ethyl acetate, and the like, to yield thecorresponding compound of formula (X).

The compound of formula (X) is reacted with POCl₃ or a suitably selectedacid catalyst such as (1S)-(+)-10-camphorsulfonic acid,p-toluenesulfonic acid, acetic acid, and the like; neat or in a suitablyselected organic solvent such as 1,4-dioxane, toluene, and the like; toyield the corresponding compound of formula (Ia).

Alternatively, the compound of formula (IX) is reacted with a suitablyselected reducing agent such as iron powder, and the like; in thepresence of a suitably selected acid catalyst such as acetic acid,p-toluenesulfonic acid, camphorsulfonic acid, and the like; neat or in asuitably selected organic solvent such as acetic acid, 1,4-dioxane,toluene, and the like; preferably at a temperature in the range of fromabout 80° C. to about 100° C., to yield the corresponding compound offormula (Ia).

Compounds of formula (I) wherein

are preferably prepared by reacting a suitably substituted compound offormula (VII) wherein

and wherein R³ is hydrogen, with a mixture of SnCl₂ and hydrochloricacid; to reduce the nitro group to the corresponding amino group, whilesimultaneously replacing the R³ hydrogen group with chloro, to yield thecorresponding compound of formula (XI)

Said compound of formula (XI) is then reacted with a suitablysubstituted compound of formula (VIII), as described above to yield amixture of the corresponding compounds of formula (XI) and (XII)

which mixture of compounds is then reacted under ring closureconditions, as described above, to yield the corresponding desiredcompound of formula (I).

Compounds of formula (I) wherein

may be prepared according to the procedure as described in Scheme 2,below.

Accordingly, a suitably selected compound of formula (XV), wherein L¹ isa suitably selected leaving group such as chloro, bromo, and the like,preferably bromo, and wherein L⁴ is a suitably selected leaving groupsuch as chloro, bromo, and the like, preferably bromo, wherein L¹ and L⁴are preferably the same; is reacted with a suitably substituted compoundof formula (VIII), wherein L³ is a suitably selected leaving group suchas chloro, bromo, fluoro, and the like, preferably chloro, a knowncompound or compound prepared by known methods; in the presence of asuitably selected inorganic base such as sodium hydride, potassiumhydride, potassium tert-butoxide and the like, preferably sodiumhydride, in a suitably selected organic solvent such as DMF, THF, andthe like; to yield the corresponding compound of formula (XVI).

The compound of formula (XVI) is reacted with a suitably substitutedcompound of formula (XVII), wherein PG¹ is a suitably selected nitrogenprotecting group such as 4-methoxybenzyl, 2,4-dimethoxybenzyl, benzyl,tert-butyl, and the like, a known compound or compound prepared by knownmethods, preferably 4-methoxybenzyl-amine; optionally in the presence ofa base such as TEA, DIPEA, and the like; in a suitably selected organicsolvent such as THF, DMF, 1,4-dioxane, and the like, preferably1,4-dioxane; preferably at a temperature in the range of from about roomtemperature to about 180° C., preferably at about 65° C.; to yield thecorresponding compound of formula (XVIII).

The compound of formula (XVIII) is reacted with a suitably substitutedcompound of formula (VI), wherein M′ is a suitably selected activatinggroup such as (a) boronic acid (—B(OH)₂), (b) a suitably selectedboronic ester such as pinacolatoboryl, neopentylglycolatoboryl, and thelike, (c) a suitably selected trialkylstannyl such as tri(n-butyl)tin,and the like, (d) a suitably selected trialkylsilyl such astriallylsilyl, and the like or (e) a suitably selected aryldialkylsilylsuch as 2-(hydroxymethyl)phenyl-dimethylsilyl, and the like, a knowncompound or compound prepared by known methods, under suitable couplingconditions, for example, as described in more detail in Scheme 1, above;to yield the corresponding compound of formula (XIX).

The compound of formula (XIX) is de-protected according to knownmethods, to yield the corresponding compound of formula (XX). Forexample, wherein PG¹ is 4-methoxybenzyl, the compound of formula (XIX)may be de-protected by reacting with a suitably selected acid such asHCl, TFA, and the like; neat or in a suitably selected organic solventsuch as DCE, chloroform, and the like; preferably at a temperature inthe range of from about room temperature to about 150° C., preferably atabout 65° C.; to yield the corresponding compound of formula (XX).

The compound of formula (XX) is reacted with POCl₃ or a suitablyselected acid catalyst such as (1S)-(+)-10-camphorsulfonic acid,p-toluenesulfonic acid, acetic acid, and the like; neat or in a suitablyselected organic solvent such as 1,4-dioxane, toluene, and the like; toyield the corresponding compound of formula (Ib).

Compounds of formula (I) wherein

may alternatively be prepared as described in Scheme 3, below.

Accordingly, a suitably substituted compound of formula (XXI), a knowncompound or compound prepared by known methods, is reacted with asuitably substituted compound of formula (XXII), wherein A¹ is C₁₋₄alkylor phenyl, preferably methyl or ethyl, a known compound or compoundprepared by known methods; in the presence of a suitably selected basesuch as sodium hydride, potassium hydride, potassium tert-butoxide,n-butyllithium and the like; in a suitably selected organic solvent suchas THF, DME, DMF, 1,4-dioxane, and the like; to yield the correspondingcompound of formula (XXIII).

The compound of formula (XXIII) is cyclized according to known methods,for example by heating to a temperature in the range of from about 80°C. to about solvent reflux temperature; in a suitably selected organicsolvent such as toluene, xylene, chlorobenzene, and the like, preferablytoluene; to yield the corresponding compound of formula (XXIV).

The compound of formula (XXIV) is reacted with a suitably selectednitrating agent such as nitric acid, fuming nitric acid, and the like;in a suitably selected organic solvent such as acetic acid, sulfuricacid, and the like, preferably acetic acid; preferably at a temperaturein the range of from about room temperature to about 80° C., morepreferably at about 60° C.; to yield the corresponding compound offormula (XXV).

The compound of formula (XXV) is reacted with a suitably selectedchlorinating agent such as POCl₃, PCl₃, and the like; neat or in asuitably selected organic solvent such as toluene, and the like; at atemperature in the range of from about 80° C. to about 120° C.,preferably at about 100° C.; to yield the corresponding compound offormula (XXVI).

One skilled in the art will recognize that the compound of formula (XXV)may alternatively be reacted with a suitably selected brominating agentsuch as POBr₃, PBr₃, and the like; neat or in a suitably selectedsolvent such as toluene, and the like, to yield the correspondingcompound of formula (XXVI) wherein the chloro group on the 4-position ofthe pyridine is replaced with a bromo. Said compound may then be reactedas hereinafter described, using the bromo rather than the chloro as theleaving group.

The compound of formula (XXVI) is reacted with a suitably substitutedcompound of formula (XVII), wherein PG¹ is a suitably selected nitrogenprotecting group such as tert-butyl, benzyl, 4-methyoxybenzyl, and thelike, a known compound or compound prepared by known methods; optionallyin the presence of a base such as TEA, DIPEA and the like; in a suitablyselected organic solvent such as THF, DMF, 1,4-dioxane, ethyl acetate,NMP, and the like, preferably 1,4-dioxane; preferably at a temperaturein the range of from about room temperature to about 180° C., preferablyat about 65° C.; to yield the corresponding compound of formula (XXVII).

One skilled in the art will recognize that the compound of formula(XXVI) may alternatively be reacted with ammonia or an ammoniaequivalent such as ammonium acetate, and the like, in a suitablyselected solvent such as methanol, 1,4-dioxane, NMP, THF, and the like;at a temperature in the range of from about 0° C. to about 100° C.; toyield the corresponding compound of formula (XXVII) wherein the PG¹group is replaced with hydrogen.

For the preparation of compounds of formula (I) wherein R³ is other thanhydrogen, chloro, C₁₋₄alkyl or fluorinated C₁₋₄alkyl, the compound offormula (XXVII) wherein R³ is chloro, is reacted with a suitablyselected nucleophile, according to known methods, to yield thecorresponding compound or formula (XXIX).

More particularly, a compound of formula (XXIX) wherein R³ is—NR^(A)R^(B) may be prepared by reacting a compound of formula (XXVII)wherein R³ is chloro with a suitably substituted amine of the formulaNHR^(A)R^(B), a known compound or compound prepared by known methods; inthe presence of a suitably selected base such as K₂CO₃, Na₂CO₃, and thelike; in a suitably selected organic solvent such as DMF, DMA, NMP, andthe like. Further, a compound of formula (XXIX) wherein R³ is cyano maybe prepared by reacting a compound of formula (XXVII) wherein R³ ischloro with, for example, NaCN, CuCN, and the like; in a suitablyselected organic solvent such as DMF, NMP, and the like. Further, acompound of formula (XXIX) wherein R³ is selected from the groupconsisting of C₁₋₄alkoxy, fluorinated C₁₋₄alkoxy, —O—(CH₂)₂—OH,—O—(CH₂)₂—O—(C₁₋₄alkyl), —O—CH₂-(fluorinated C₁₋₂alkyl) and—O—(CH₂)₂—NR^(A)R^(B) may be prepared by reacting a compound of formula(XXVII) with, for example, the corresponding R³—Na or R³—K reagent, aknown compound or compound prepared by known methods, as would bereadily recognized by one skilled in the art.

One skilled in the art will recognize that compounds of formula (XXIX)wherein R³ is —O—CH₂—C(O)OH may be prepared by further oxidizing thecorresponding compound of formula (XXIX) wherein R³ is —O—(CH₂)₂—OH,according to known methods, to convert the —O—CH₂—CH₂—OH to thecorresponding aldehyde (i.e. converting —O—CH₂—CH₂—OH to thecorresponding —O—CH₂—CHO). For example, a suitably substituted compoundof formula (V) wherein R³ is —O—(CH₂)₂—OH may be reacted with a suitablyselected reagent such as Dess-Martin periodinane, oxalyl chloride/DMSO,and the like, according to known methods. The resulting aldehydecompound may then be further oxidized by, for example, reacting with asuitably selected reagent such as NaClO₂, and the like, in the presenceof 2-methyl-2-butene, and the like; to yield the corresponding compoundof formula (XXIX) wherein the aldehyde is converted to the correspondingcarboxyl acid (i.e. converting the —O—(CH₂)₂—CHO group to thecorresponding —O—CH₂—C(O)OH group).

The compound of formula (XXIX) (or the compound of formula (XXVII) if R³is hydrogen) is de-protected according to known method, to yield thecorresponding compound of formula (XXX). For example, wherein PG¹ isp-methoxybenzyl, the compound of formula (XXIX) may be de-protected byreacting with a suitably selected acid such as HCl, TFA, and the like;neat or in a suitably selected organic solvent such as DCE, chloroform,and the like; preferably at a temperature in the range of from aboutroom temperature to about 150° C., preferably at about 65° C.; to yieldthe corresponding compound of formula (XXX).

The compound of formula (XXX) is reacted with a suitably substitutedcompound of formula (VIII), wherein L³ is a suitably selected leavinggroup such as chloro, bromo, fluoro, and the like, preferably chloro, aknown compound or compound prepared by known methods; in the presence ofa suitably selected inorganic base such as sodium hydride, potassiumhydride, potassium tert-butoxide and the like, preferably sodiumhydride, in a suitably selected organic solvent such as DMF, THF, andthe like; to yield the corresponding compound of formula (XXXI).

The compound of formula (XXXI) is reacted with a suitably selectedreducing agent such as hydrogen in the presence of a catalyst such aspalladium on carbon, hydrogen in the presence of a catalyst such asplatinum on carbon doped with vanadium, tin (II) chloride, Pt(Sulfided)/C, and the like; in a suitably selected organic solvent suchas methanol, ethanol, THF, and the like, to yield the correspondingcompound of formula (XXXII).

The compound of formula (XXXII) is reacted with POCl₃ or a suitablyselected acid catalyst such as (1S)-(+)-10-camphorsulfonic acid,p-toluenesulfonic acid, acetic acid, and the like; neat or in a suitablyselected organic solvent such as 1,4-dioxane, toluene, and the like; toyield the corresponding compound of formula (Ic).

Alternatively, the compound of formula (XXXI) is reacted with a suitablyselected reducing agent such as iron powder, and the like; in thepresence of a suitably selected acid catalyst such as acetic acid,p-toluenesulfonic acid, camphorsulfonic acid, and the like; neat or in asuitably selected organic solvent such as acetic acid, 1,4-dioxane,toluene, and the like; preferably at a temperature in the range of fromabout 80° C. to about 100° C., to yield the corresponding compound offormula (Ic).

Compounds of formula (I) wherein

may be prepared as described in Scheme 4, below.

Accordingly, a suitably substituted compound of formula (XXXIII),wherein L⁵ is a suitably selected leaving group such as is a suitablyselected leaving group such as chloro, bromo, triflate, and the like, aknown compound or compound prepared by known methods, is reacted with asuitably substituted compound of formula (VI), wherein M¹ is a suitablyselected activating group such as (a) boronic acid (—B(OH)₂), (b) asuitably selected boronic ester such as pinacolatoboryl,neopentylglycolatoboryl, and the like, (c) a suitably selectedtrialkylstannyl such as tri(n-butyl)tin, and the like, (d) a suitablyselected trialkylsilyl such as triallylsilyl, and the like or (e) asuitably selected aryldialkylsilyl such as2-(hydroxymethyl)phenyl-dimethylsilyl, and the like, a known compound orcompound prepared by known methods, under suitable coupling conditions,to yield the corresponding compound of formula (XXXIV).

For example, wherein compound of formula (VI), where M¹ is —B(OH)₂ or asuitably selected boronic ester, the compound of formula (XXXIII) isreacted with the compound of formula (VI) under Suzuki couplingconditions, more particularly in the presence of a suitably selectedpalladium catalyst such as palladium (II) acetate, palladium (II)chloride, bis(acetonitrile)-dichloro-palladium(II), allylpalladium (II)chloride dimer, tris(dibenzylidineacetone) dipalladium (0) (Pd₂(dba)₃),2-(di-tert-butylphosphino)biphenyl,dichloro-bis(di-tert-butylphenylphosphine)-palladium (II),[1,1′-bis-(diphenylphosphino)-ferrocene]-palladium (II) dichloridedichloromethane adduct ((dppf)PdCl₂.DCM),2-(dicyclohexylphosphino)-2′,4′,6′-tri-i-propyl-1,1′-biphenyl,tetrakis(triphenylphosphine) palladium(0) (Pd(PPh₃)₄),(1,1′-bis(di-tert-butylphosphino)ferrocene palladium (II) chloride, andthe like; optionally in the presence of a suitably selected added ligandsuch as triphenylphosphine, tri-o-tolylphosphine,tri(tert-butyl)-phosphine, tricyclohexylphosphine,1,1′-bis(diphenylphosphino)-ferrocene,bis[2-(diphenyl-phosphino)phenyl]ether,2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl, tris(2-furyl)phosphine,1-butyl-3-methylimidazolium hexafluorophosphate, and the like; in thepresence of a suitably selected inorganic base such as cesium carbonate,potassium carbonate, sodium carbonate, cesium fluoride, potassiumfluoride, tetrabutylammonium fluoride, potassium tert-butoxide, sodiumtert-butoxide, aqueous sodium hydroxide, aqueous sodium bicarbonate;potassium phosphate or preferably aqueous sodium carbonate; in asuitably selected organic solvent such as ethanol, THF, DMF, toluene,benzene, DME, 1,4-dioxane, and the like; preferably at a suitabletemperature in the range of from about room temperature to about 180° C.

The compound of formula (XXXIV) is reacted with a suitably substitutedcompound of formula (VIII), wherein L³ is a suitably selected leavinggroup such as chloro, bromo, fluoro, and the like, preferably chloro, aknown compound or compound prepared by known methods; in the presence ofa suitably selected inorganic base such as sodium hydride, potassiumhydride, potassium tert-butoxide, n-butyllithium, and the like,preferably sodium hydride; in a suitably selected organic solvent suchas DMF, THF, and the like, to yield the corresponding compound offormula (XXXV).

The compound of formula (XXXV) is reacted with a suitably selectedreducing agent such as hydrogen in the presence of a catalyst such aspalladium on carbon, hydrogen in the presence of a catalyst such asplatinum on carbon doped with vanadium, tin (II) chloride, Pt(Sulfided)/C, and the like; in a suitably selected organic solvent suchas methanol, ethanol, THF, and the like, to yield the correspondingcompound of formula (XXXVI).

The compound of formula (XXXVI) is reacted with POCl₃ or a suitablyselected acid catalyst such as (1S)-(+)-10-camphorsulfonic acid,p-toluenesulfonic acid, acetic acid, and the like; neat or in a suitablyselected organic solvent such as 1,4-dioxane, toluene, and the like; toyield the corresponding compound of formula (Id).

Alternatively, the compound of formula (XXXV) is reacted with a suitablyselected reducing agent such as iron powder, and the like; in thepresence of a suitably selected acid catalyst such as acetic acid,p-toluenesulfonic acid, camphorsulfonic acid, and the like; neat or in asuitably selected organic solvent such as acetic acid, 1,4-dioxane,toluene, and the like; preferably at a temperature in the range of fromabout 80° C. to about 100° C., to yield the corresponding compound offormula (Id).

Compounds of formula (I) wherein

may be prepared according to the process outlined in Scheme 5, below.

Accordingly, a suitably substituted compound of formula (XL), wherein L⁴is a suitably selected leaving group such as chloro, bromo, and thelike, and wherein E¹ is selected from the group consisting of hydrogen,chloro, C₁₋₄alkyl and fluorinated C₁₋₄alkyl, a known compound orcompound prepared by known methods, is reacted with a suitablysubstituted compound of formula (VI), wherein M¹ is a suitably selectedactivating group such as (a) boronic acid (—B(OH)₂), (b) a suitablyselected boronic ester such as pinacolatoboryl, neopentylglycolatoboryl,and the like, (c) a suitably selected trialkylstannyl such astri(n-butyl)tin, and the like, (d) a suitably selected trialkylsilylsuch as triallylsilyl, and the like or (e) a suitably selectedaryldialkylsilyl such as 2-(hydroxymethyl)phenyl-dimethylsilyl, and thelike, a known compound or compound prepared by known methods, undersuitable coupling conditions, to yield the corresponding compound offormula (XLI)).

For example, wherein compound of formula (VI), M¹ is —B(OH)₂ or asuitably selected boronic ester, the compound of formula (XL) is reactedwith the compound of formula (VI) under Suzuki coupling conditions, moreparticularly in the presence of a suitably selected palladium catalystsuch as palladium (II) acetate, palladium (II) chloride,bis(acetonitrile)-dichloro-palladium(II), allylpalladium (II) chloridedimer, tris(dibenzylidineacetone) dipalladium (0) (Pd₂(dba)₃),2-(di-tert-butylphosphino)biphenyl,dichloro-bis(di-tert-butylphenylphosphine)-palladium (II),[1,1′-bis-(diphenylphosphino)-ferrocene]-palladium (II) dichloridedichloromethane adduct ((dppf)PdCl₂.DCM),2-(dicyclohexylphosphino)-2′,4′,6′-tri-iso-propyl-1,1′-biphenyl,tetrakis(triphenylphosphine) palladium(0) (Pd(PPh₃)₄),(1,1′-bis(di-tert-butylphosphino)ferrocene palladium(II) chloride, andthe like; optionally in the presence of a suitably selected added ligandsuch as triphenylphosphine, tri-o-tolylphosphine,tri(tert-butyl)-phosphine, tricyclohexylphosphine,1,1′-bis(diphenylphosphino)-ferrocene,bis[2-(diphenyl-phosphino)phenyl]ether,2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl, tris(2-furyl)phosphine,1-butyl-3-methylimidazolium hexafluorophosphate, and the like; in thepresence of a suitably selected inorganic base such as cesium carbonate,potassium carbonate, sodium carbonate, cesium fluoride, potassiumfluoride, tetrabutylammonium fluoride, potassium tert-butoxide, sodiumtert-butoxide, aqueous sodium hydroxide, aqueous sodium bicarbonate;potassium phosphate or preferably aqueous sodium carbonate; in asuitably selected organic solvent such as ethanol, THF, DMF, toluene,benzene, DME, 1,4-dioxane, and the like; preferably at a suitabletemperature in the range of from about room temperature to about 180° C.

The compound of formula (XLI) is reacted with a suitably selectednitrating agent such as nitric acid, potassium nitrate, and the like; ina suitably selected organic solvent such as concentrated sulfuric acid,and the like; to yield the corresponding compound of formula (XLIII),wherein R³ is the corresponding E¹ substituent, selected from the groupconsisting of hydrogen, chloro, C₁₋₄alkyl and fluorinated C₁₋₄alkyl. Oneskilled in the art will recognize that the compound of formula (XLI) maybe reacted to yield the corresponding compound of formula (XLIII) byreacted with other known nitrating agents, according to known methods(for example, reacting with nitronium tetrafluoroborate in DCM).

Alternatively, wherein the compound of formula (XLI) E¹ is chloro, thecompound of formula (XLI) may be reacted with a suitably selectednitrating agent such as nitric acid, potassium nitrate, and the like; ina suitably selected organic solvent such as concentrated sulfuric acid,and the like; to yield the corresponding compound of formula (XLII).

The compound of formula (XLII) is then reacted with a suitably selectednucleophile, according to known methods, to yield the correspondingcompound of formula (XLIII) wherein R³ is the corresponding substituentselected from the group consisting of —NR^(A)R^(B), cyano, C₁₋₄alkoxy,fluorinated C₁₋₄alkoxy, —O—(CH₂)₂—OH, —O—(CH₂)₂—O—(C₁₋₄alkyl),—O—CH₂-(fluorinated C₁₋₂alkyl) and —O—(CH₂)₂—NR^(A)R^(B).

More particularly, for the preparation of a compound of formula (XLV)wherein R³ is —NR^(A)R^(B), the compound of formula (XLII) is reactedwith a suitably substituted amine of the formula NHR^(A)R^(B), a knowncompound or compound prepared by known methods; in the presence of asuitably selected base such as K₂CO₃, Na₂CO₃, and the like; in asuitably selected organic solvent such as DMF, DMA, NMP, and the like.For the preparation of a compound of formula (XLIII) wherein R³ iscyano, the compound of formula (XLII) is reacted with for example NaCN,CuCN, and the like; in a suitably selected organic solvent such as DMF,NMP, and the like. For the preparation of a compound of formula (XLIII)wherein R³ is selected from the group consisting of C₁₋₄alkoxy,fluorinated C₁₋₄alkoxy, —O—(CH₂)₂—OH, —O—(CH₂)₂—O—(C₁₋₄alkyl),—O—CH₂-(fluorinated C₁₋₂alkyl) and —O—(CH₂)₂—NR^(A)R^(B), the compoundof formula (XLII) is reacted with, for example, the corresponding R³—Naor R³—K reagent, a known compound or compound prepared by known methods,as would be readily recognized by one skilled in the art.

One skilled in the art will recognize that compounds of formula (XLV)wherein R³ is —O—CH₂—C(O)OH may be prepared by further oxidizing thecorresponding compound of formula (XLV) wherein R³ is —O—(CH₂)₂—OH,according to known methods, to convert the —O—CH₂—CH₂—OH to thecorresponding aldehyde (i.e. converting —O—CH₂—CH₂—OH to thecorresponding —O—CH₂—CHO). For example, a suitably substituted compoundof formula (XLV) wherein R³ is —O—(CH₂)₂—OH may be reacted with asuitably selected reagent such as Dess-Martin periodinane, oxalylchloride/DMSO, and the like, according to known methods. The resultingaldehyde compound may then be further oxidized by, for example, reactingwith a suitably selected reagent such as NaClO₂, and the like, in thepresence of 2-methyl-2-butene, and the like; to yield the correspondingcompound of formula (XLV) wherein the aldehyde is converted to thecorresponding carboxyl acid (i.e. converting the —O—(CH₂)₂—CHO group tothe corresponding —O—CH₂—C(O)OH group).

The compound of formula (XLIII), is then further reacted as hereindescribed, to yield the corresponding compound of formula (Ie). Moreparticularly, the compound of formula (XLIII) is substituted for thecompound of formula (VII), and reacting as described in Scheme 1 above,to yield the corresponding compound of formula (Ie). (More particularly,the compound of formula (XLIII) is reacted with a suitably selectedcompound of formula (VIII) and then further reacted according to thedescribed one-step or two-step process, to reduce the nitro group to thecorresponding amine and ring-close, to yield the corresponding compoundof formula (Ie).)

For use in medicine, the salts of the compounds of this invention referto non-toxic “pharmaceutically acceptable salts.” Other salts may,however, be useful in the preparation of compounds according to thisinvention or of their pharmaceutically acceptable salts. Suitablepharmaceutically acceptable salts of the compounds include acid additionsalts which may, for example, be formed by mixing a solution of thecompound with a solution of a pharmaceutically acceptable acid such ashydrochloric acid, sulfuric acid, fumaric acid, maleic acid, succinicacid, acetic acid, benzoic acid, citric acid, tartaric acid, carbonicacid or phosphoric acid. Furthermore, where the compounds of theinvention carry an acidic moiety, suitable pharmaceutically acceptablesalts thereof may include alkali metal salts, e.g., sodium or potassiumsalts; alkaline earth metal salts, e.g., calcium or magnesium salts; andsalts formed with suitable organic ligands, e.g., quaternary ammoniumsalts. Thus, representative pharmaceutically acceptable salts include,but are not limited to, the following: acetate, benzenesulfonate,benzoate, bicarbonate, bisulfate, bitartrate, borate, bromide, calciumedetate, esultin, camsylate, carbonate, chloride, clavulanate, citrate,dihydrochloride, edetate, edisylate, estolate, esylate, fumarate,gluceptate, gluconate, glutamate, glycollylarsanilate, hexylresorcinate,hydrabamine, hydrobromide, hydrochloride, hydroxynaphthoate, iodide,isothionate, lactate, lactobionate, laurate, malate, maleate, mandelate,mesylate, methylbromide, methylnitrate, methylsulfate, mucate,napsylate, nitrate, N-methylglucamine ammonium salt, oleate, pamoate(embonate), palmitate, pantothenate, phosphate/diphosphate,polygalacturonate, salicylate, stearate, sulfate, subacetate, succinate,tannate, tartrate, teoclate, tosylate, triethiodide and valerate.

Representative acids which may be used in the preparation ofpharmaceutically acceptable salts include, but are not limited to, thefollowing: acids including acetic acid, 2,2-dichloroacetic acid,acylated amino acids, adipic acid, alginic acid, ascorbic acid,L-aspartic acid, benzenesulfonic acid, benzoic acid, 4-acetamidobenzoicacid, (+)-camphoric acid, camphorsulfonic acid,(+)-(1S)-camphor-10-sulfonic acid, capric acid, caproic acid, caprylicacid, cinnamic acid, citric acid, cyclamic acid, dodecylsulfuric acid,ethane-1,2-disulfonic acid, ethanesulfonic acid,2-hydroxy-ethanesulfonic acid, formic acid, fumaric acid, galactaricacid, gentisic acid, glucoheptonic acid, D-gluconic acid, D-glucuronicacid, L-glutamic acid, α-oxo-glutaric acid, glycolic acid, hippuricacid, hydrobromic acid, hydrochloric acid, (+)-L-lactic acid,(±)-DL-lactic acid, lactobionic acid, maleic acid, (−)-L-malic acid,malonic acid, (±)-DL-mandelic acid, methanesulfonic acid,naphthalene-2-sulfonic acid, naphthalene-1,5-disulfonic acid,1-hydroxy-2-naphthoic acid, nicotinic acid, nitric acid, oleic acid,orotic acid, oxalic acid, palmitic acid, pamoic acid, phosphoric acid,L-pyroglutamic acid, salicylic acid, 4-amino-salicylic acid, sebacicacid, stearic acid, succinic acid, sulfuric acid, tannic acid,(+)-L-tartaric acid, thiocyanic acid, p-toluenesulfonic acid andundecylenic acid.

Representative bases which may be used in the preparation ofpharmaceutically acceptable salts include, but are not limited to, thefollowing: bases including ammonia, L-arginine, benethamine, benzathine,calcium hydroxide, choline, deanol, diethanolamine, diethylamine,2-(diethylamino)-ethanol, ethanolamine, ethylenediamine,N-methyl-glucamine, hydrabamine, 1H-imidazole, L-lysine, magnesiumhydroxide, 4-(2-hydroxyethyl)-morpholine, piperazine, potassiumhydroxide, 1-(2-hydroxyethyl)-pyrrolidine, secondary amine, sodiumhydroxide, triethanolamine, tromethamine and zinc hydroxide.

The present invention includes within its scope prodrugs of thecompounds of this invention. In general, such prodrugs will befunctional derivatives of the compounds which are readily convertible invivo into the required compound. Thus, in the methods of treatment ofthe present invention, the term “administering” shall encompass thetreatment of the various disorders described with the compoundspecifically disclosed or with a compound which may not be specificallydisclosed, but which converts to the specified compound in vivo afteradministration to the patient. Conventional procedures for the selectionand preparation of suitable prodrug derivatives are described, forexample, in “Design of Prodrugs”, ed. H. Bundgaard, Elsevier, 1985.

The present invention further comprises pharmaceutical compositionscontaining one or more compounds of formula (I) with a pharmaceuticallyacceptable carrier. Pharmaceutical compositions containing one or moreof the compounds of the invention described herein as the activeingredient can be prepared by intimately mixing the compound orcompounds with a pharmaceutical carrier according to conventionalpharmaceutical compounding techniques. The carrier may take a widevariety of forms depending upon the desired route of administration(e.g., oral, parenteral). Thus for liquid oral preparations such assuspensions, elixirs and solutions, suitable carriers and additivesinclude water, glycols, oils, alcohols, flavoring agents, preservatives,stabilizers, coloring agents and the like; for solid oral preparations,such as powders, capsules and tablets, suitable carriers and additivesinclude starches, sugars, diluents, granulating agents, lubricants,binders, disintegrating agents and the like. Solid oral preparations mayalso be coated with substances such as sugars or be enteric-coated so asto modulate major site of absorption. For parenteral administration, thecarrier will usually consist of sterile water and other ingredients maybe added to increase solubility or preservation. Injectable suspensionsor solutions may also be prepared utilizing aqueous carriers along withappropriate additives.

To prepare the pharmaceutical compositions of this invention, one ormore compounds of the present invention as the active ingredient isintimately admixed with a pharmaceutical carrier according toconventional pharmaceutical compounding techniques, which carrier maytake a wide variety of forms depending of the form of preparationdesired for administration, e.g., oral or parenteral such asintramuscular. In preparing the compositions in oral dosage form, any ofthe usual pharmaceutical media may be employed. Thus, for liquid oralpreparations, such as for example, suspensions, elixirs and solutions,suitable carriers and additives include water, glycols, oils, alcohols,flavoring agents, preservatives, coloring agents and the like; for solidoral preparations such as, for example, powders, capsules, caplets,gelcaps and tablets, suitable carriers and additives include starches,sugars, diluents, granulating agents, lubricants, binders,disintegrating agents and the like. Because of their ease inadministration, tablets and capsules represent the most advantageousoral dosage unit form, in which case solid pharmaceutical carriers areobviously employed. If desired, tablets may be sugar coated or entericcoated by standard techniques. For parenterals, the carrier will usuallycomprise sterile water, through other ingredients, for example, forpurposes such as aiding solubility or for preservation, may be included.Injectable suspensions may also be prepared, in which case appropriateliquid carriers, suspending agents and the like may be employed. Thepharmaceutical compositions herein will contain, per dosage unit, e.g.,tablet, capsule, powder, injection, teaspoonful and the like, an amountof the active ingredient necessary to deliver an effective dose asdescribed above. The pharmaceutical compositions herein will contain,per unit dosage unit, e.g., tablet, capsule, powder, injection,suppository, teaspoonful and the like, of from about 0.01 to about 1000mg or any amount or range therein, and may be given at a dosage of fromabout 0.01 to about 300 mg/kg/day, or any amount or range therein,preferably from about 0.1 to about 50 mg/kg/day, or any amount or rangetherein, more preferably from about 0.1 to about 10 mg/kg/day, or anyamount or range therein, more preferably from about 0.1 to about 5mg/kg/day, or any amount or range therein. The dosages, however, may bevaried depending upon the requirement of the patients, the severity ofthe condition being treated and the compound being employed. The use ofeither daily administration or postert-periodic dosing may be employed.

Preferably these compositions are in unit dosage forms from such astablets, pills, capsules, powders, granules, sterile parenteralsolutions or suspensions, metered aerosol or liquid sprays, drops,ampoules, autoinjector devices or suppositories; for oral parenteral,intranasal, sublingual or rectal administration, or for administrationby inhalation or insufflation. Alternatively, the composition may bepresented in a form suitable for once-weekly or once-monthlyadministration; for example, an insoluble salt of the active compound,such as the decanoate salt, may be adapted to provide a depotpreparation for intramuscular injection. For preparing solidcompositions such as tablets, the principal active ingredient is mixedwith a pharmaceutical carrier, e.g. conventional tableting ingredientssuch as corn starch, lactose, sucrose, sorbitol, talc, stearic acid,magnesium stearate, dicalcium phosphate or gums, and otherpharmaceutical diluents, e.g. water, to form a solid preformulationcomposition containing a homogeneous mixture of a compound of thepresent invention, or a pharmaceutically acceptable salt thereof. Whenreferring to these preformulation compositions as homogeneous, it ismeant that the active ingredient is dispersed evenly throughout thecomposition so that the composition may be readily subdivided intoequally effective dosage forms such as tablets, pills and capsules. Thissolid preformulation composition is then subdivided into unit dosageforms of the type described above containing from 0.01 to about 1000 mg,or any amount or range therein, of the active ingredient of the presentinvention. The tablets or pills of the novel composition can be coatedor otherwise compounded to provide a dosage form affording the advantageof prolonged action. For example, the tablet or pill can comprise aninner dosage and an outer dosage component, the latter being in the formof an envelope over the former. The two components can be separated byan enteric layer which serves to resist disintegration in the stomachand permits the inner component to pass intact into the duodenum or tobe delayed in release. A variety of material can be used for suchenteric layers or coatings, such materials including a number ofpolymeric acids with such materials as shellac, cetyl alcohol andcellulose acetate.

The liquid forms in which the novel compositions of the presentinvention may be incorporated for administration orally or by injectioninclude, aqueous solutions, suitably flavored syrups, aqueous or oilsuspensions, and flavored emulsions with edible oils such as cottonseedoil, sesame oil, coconut oil or peanut oil, as well as elixirs andsimilar pharmaceutical vehicles. Suitable dispersing or suspendingagents for aqueous suspensions, include synthetic and natural gums suchas tragacanth, acacia, alginate, dextran, sodium carboxymethylcellulose,methylcellulose, polyvinyl-pyrrolidone or gelatin.

The method of treating TRP M8 mediated disorders described in thepresent invention may also be carried out using a pharmaceuticalcomposition comprising any of the compounds as defined herein and apharmaceutically acceptable carrier. The pharmaceutical composition maycontain between about 0.01 mg and about 1000 mg of the compound, or anyamount or range therein; preferably about 0.1 to about 500 mg of thecompound, or any amount or range therein, and may be constituted intoany form suitable for the mode of administration selected. Carriersinclude necessary and inert pharmaceutical excipients, including, butnot limited to, binders, suspending agents, lubricants, flavorants,sweeteners, preservatives, dyes, and coatings. Compositions suitable fororal administration include solid forms, such as pills, tablets,caplets, capsules (each including immediate release, timed release andsustained release formulations), granules, and powders, and liquidforms, such as solutions, syrups, emulsions, and suspensions. Formsuseful for parenteral administration include sterile solutions,emulsions and suspensions.

Advantageously, compounds of the present invention may be administeredin a single daily dose, or the total daily dosage may be administered individed doses of two, three or four times daily. Furthermore, compoundsfor the present invention can be administered in intranasal form viatopical use of suitable intranasal vehicles, or via transdermal skinpatches well known to those of ordinary skill in that art. To beadministered in the form of a transdermal delivery system, the dosageadministration will, of course, be continuous rather than intermittentthroughout the dosage regimen.

For instance, for oral administration in the form of a tablet orcapsule, the active drug component can be combined with an oral,non-toxic pharmaceutically acceptable inert carrier such as ethanol,glycerol, water and the like. Moreover, when desired or necessary,suitable binders; lubricants, disintegrating agents and coloring agentscan also be incorporated into the mixture. Suitable binders include,without limitation, starch, gelatin, natural sugars such as glucose orbeta-lactose, corn sweeteners, natural and synthetic gums such asacacia, tragacanth or sodium oleate, sodium stearate, magnesiumstearate, sodium benzoate, sodium acetate, sodium chloride and the like.Disintegrators include, without limitation, starch, methyl cellulose,agar, bentonite, xanthan gum and the like.

The liquid forms in suitably flavored suspending or dispersing agentssuch as the synthetic and natural gums, for example, tragacanth, acacia,methylcellulose and the like. For parenteral administration, sterilesuspensions and solutions are desired. Isotonic preparations whichgenerally contain suitable preservatives are employed when intravenousadministration is desired.

To prepare a pharmaceutical composition of the present invention, acompound of formula (I), as the active ingredient is intimately admixedwith a pharmaceutical carrier according to conventional pharmaceuticalcompounding techniques, which carrier may take a wide variety of formsdepending of the form of preparation desired for administration (e.g.oral or parenteral). Suitable pharmaceutically acceptable carriers arewell known in the art. Descriptions of some of these pharmaceuticallyacceptable carriers may be found in The Handbook of PharmaceuticalExcipients, published by the American Pharmaceutical Association and thePharmaceutical Society of Great Britain.

Methods of formulating pharmaceutical compositions have been describedin numerous publications such as Pharmaceutical Dosage Forms: Tablets,Second Edition, Revised and Expanded, Volumes 1-3, edited by Liebermanet al; Pharmaceutical Dosage Forms: Parenteral Medications, Volumes 1-2,edited by Avis et al; and Pharmaceutical Dosage Forms: Disperse Systems,Volumes 1-2, edited by Lieberman et al; published by Marcel Dekker, Inc.

Compounds of the present invention may be administered in any of theforegoing compositions and according to dosage regimens established inthe art whenever treatment of disorders mediated by TRP M8 is required.

The daily dosage of the products may be varied over a wide range fromabout 0.01 to about 1,000 mg per adult human per day, or any amount orrange therein. For oral administration, the compositions are preferablyprovided in the form of tablets containing, 0.01, 0.05, 0.1, 0.5, 1.0,2.5, 5.0, 10.0, 15.0, 25.0, 50.0, 100, 150, 200, 250, 500 and 1000milligrams of the active ingredient for the symptomatic adjustment ofthe dosage to the patient to be treated. An effective amount of the drugis ordinarily supplied at a dosage level of from about 0.01 mg/kg toabout 300 mg/kg of body weight per day, or any amount or range therein.Preferably, the range is from about 0.1 to about 50.0 mg/kg of bodyweight per day, or any amount or range therein. More preferably, therange is from about 0.1 to about 10 mg/kg/day, or any amount or rangetherein. More preferably, the range is from about 0.1 to about 5mg/kg/day, or any amount or range therein. In an embodiment, the rangeis from about 0.5 to about 10 mg/kg of body weight per day, or anyamount or range therein. The compounds may be administered on a regimenof 1 to 4 times per day.

Optimal dosages to be administered may be readily determined by thoseskilled in the art, and will vary with the particular compound used, themode of administration, the strength of the preparation, the mode ofadministration, and the advancement of the disease condition. Inaddition, factors associated with the particular patient being treated,including patient age, weight, diet and time of administration, willresult in the need to adjust dosages.

One skilled in the art will recognize that, both in vivo and in vitrotrials using suitable, known and generally accepted cell and/or animalmodels are predictive of the ability of a test compound to treat orprevent a given disorder. One skilled in the art will further recognizethat human clinical trials including first-in-human, dose ranging andefficacy trials, in healthy patients and/or those suffering from a givendisorder, may be completed according to methods well known in theclinical and medical arts.

The following Examples are set forth to aid in the understanding of theinvention, and are not intended and should not be construed to limit inany way the invention set forth in the claims which follow thereafter.

In the Examples which follow, some synthesis products are listed ashaving been isolated as a residue. It will be understood by one ofordinary skill in the art that the term “residue” does not limit thephysical state in which the product was isolated and may include, forexample, a solid, an oil, a foam, a gum, a syrup, and the like.

Examples A through O, which follow herein, described the synthesis ofintermediates in the synthesis of compounds of formula (I).

Example A 5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid

STEP A: 5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid ethyl ester

Ethyl 5,5-dimethyl-2,4-dioxo-hexanoate (1.02 g, 5.09 mmol) was dissolvedin absolute EtOH (20 mL). CH₃NHNH₂ (0.270 mL, 5.09 mmol) was addeddropwise and the resulting mixture was stirred at room temperature for 2h. The resulting mixture was warmed to 80° C. for 4 h, and then cooledto room temperature. The solvent was removed under reduced pressure, andthe resulting residue was chromatographed using a 70-g pre-packed SiO₂column eluting with 1:19 EtOAc-hexanes to yield the title compound as acolorless oil. ¹H-NMR (400 MHz, CDCl₃) δ: 6.68 (s, 1H), 4.33 (q, J=7.2Hz, 2H), 4.12 (s, 3H), 1.38 (t, J=7.1 Hz, 3H), 1.30 (s, 9H).

STEP B: 5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid

5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid ethyl ester (1.08 g,5.14 mmol, prepared as described in the previous step) was dissolved inMeOH (15 mL), and H₂O (15 mL) and 2.5 M aqueous NaOH (5.00 mL, 12.5mmol) was added. The resulting mixture was stirred at room temperaturefor 72 h, and then extracted with Et₂O (2×10 mL). The aqueous layer wasacidified to ca. pH 2 using 3 M aqueous HCl and extracted with DCM (3×20mL). The combined organic extracts were dried over anhydrous MgSO₄ andfiltered, and the solvent was removed under reduced pressure to yieldthe title compound as a white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 6.80 (s,1H), 4.15 (s, 3H), 1.32 (s, 9H).

Example B 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid

STEP A: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester

To a solution of 5-tert-butyl-2-methyl-pyrazole-3-carboxylic acid ethylester (2.10 g, 10.0 mmol) in 25 mL of DCM was added sulfuryl chloride(1.05 mL, 13.0 mmol) slowly under Ar. After stirring at room temperaturefor 3 h under Ar, the resulting mixture was treated with DCM (30 mL),washed with ice H₂O, saturated aqueous NaHCO₃ and brine, and dried withNa₂SO₄. Removal of the solvent under reduced pressure yielded the titlecompound as a white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 4.40 (q, J=7.2 Hz,2H), 4.07 (s, 3H), 1.42 (t, J=7.2 Hz, 3H), 1.40 (s, 9H). Mass Spectrum(LCMS, ESI pos.) Calculated For C₁₁H₁₇ClN₂O₂: 245.1 (M+H). Measured:245.1.

STEP B: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid

A mixture of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid ethyl ester (prepared as described in the previous step, 2.20 g,9.00 mmol) and 3 N aqueous NaOH (7.50 mL, 22.5 mmol) in MeOH (40 mL) wasstirred at room temperature for 4 h. The solvent was removed underreduced pressure, and the residue was treated with H₂O (30 mL) andwashed with Et₂O. The aqueous layer was then acidified to pH 7 by 2 Naqueous HCl and extracted with DCM. The combined organic layers werewashed with brine and dried with Na₂SO₄. The solvent was removed invacuo to yield the title compound as a white solid. ¹H-NMR (400 MHz,CDCl₃) δ: 10.41 (br s, 1H), 4.12 (s, 3H), 1.42 (s, 9H). Mass Spectrum(LCMS, ESI pos.) Calculated for C₉H₁₃ClN₂O₂: 217.1 (M+H). Measured:217.1.

Example C 5-tert-Butyl-4-cyano-2-methyl-2H-pyrazole-3-carboxylic acid

STEP A: 4-Bromo-5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester

To a mixture of 5-tert-butyl-2-methyl-pyrazole-3-carboxylic acid ethylester (2.00 g, 9.51 mmol) and K₂CO₃ (3.94 g, 28.5 mmol) in DCM (120 mL),in the dark, was added Br₂ (1.46 mL, 28.5 mmol) slowly under Ar. Afterstirring at room temperature for 3 h under Ar, the resulting mixture wasquenched with saturated aqueous Na₂S₂O₃ (50 mL). The organic layer wasseparated and washed with H₂O (50 mL) and brine (50 mL), then dried withNa₂SO₄. Removal of the solvent under reduced pressure yielded a whitesolid. ¹H-NMR (400 MHz, CDCl₃) δ: 4.40 (q, J=7.1 Hz, 2H), 4.08 (s, 3H),1.43 (t, J=7.1 Hz, 3H), 1.42 (m, 9H). Mass Spectrum (LCMS, ESI pos.)Calculated For C₁₁H₁₇BrN₂O₂: 289.1 (M+H). Measured: 289.1.

STEP B: 5-tert-Butyl-4-cyano-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester

A mixture of 4-bromo-5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester (1.00 g, 3.46 mmol) and CuCN (372 mg, 4.15 mmol) in NMP (10mL) was stirred at 200° C. under microwave irradiation for 1 h. Aftercooling to room temperature, the mixture was treated with DCM (100 mL)and filtered through diatomaceous earth. The filtrate was concentratedin vacuo, and the residue was purified by flash chromatography on silicagel (0:100-10:90 EtOAc-hexanes) to yield the title compound as a whitesolid. ¹H-NMR (400 MHz, CDCl₃) δ: 4.45 (q, J=7.2 Hz, 2H), 4.14 (s, 3H),1.45 (t, J=7.2 Hz, 3H), 1.43 (s, 9H). Mass Spectrum (LCMS, ESI pos.)Calculated For C₁₂H₁₇N₃O₂: 236.1 (M+H). Measured: 236.1.

STEP C: 5-tert-Butyl-4-cyano-2-methyl-2H-pyrazole-3-carboxylic acid

Using the procedure for Example A, Step B above, the title compound wasprepared from 5-tert-butyl-4-cyano-2-methyl-2H-pyrazole-3-carboxylicacid ethyl ester (prepared as described in the previous step, 610 mg,2.59 mmol) and 1.0 N aqueous NaOH (4.00 mL, 4.00 mmol) in MeOH (10 mL).The title compound was obtained as a white solid. ¹H-NMR (400 MHz,CDCl₃) δ: 4.17 (s, 3H), 1.45 (s, 9H).

Example D 5-tert-Butyl-4-fluoro-2-methyl-2H-pyrazole-3-carboxylic acid

STEP A: 5-tert-Butyl-4-fluoro-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester

5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid ethyl ester (210 mg,1.00 mmol) was added dropwise to a stirred solution of SELECTFLUOR® (531mg, 1.50 mmol) in anhydrous acetonitrile (4 mL) under an Ar atmosphere.The resulting mixture was then stirred at 80° C. for 12 h, then cooledto room temperature, diluted with EtOAc (2 mL), and filtered. Thesolvent was removed under reduced pressure and the resulting residue waschromatographed on a 24-g SiO₂ pre-packed column eluting with 0:1-1:4EtOAc/hexanes to yield5-tert-Butyl-4-fluoro-2-methyl-2H-pyrazole-3-carboxylic acid ethylester. ¹H-NMRH-NMR (400 MHz, CDCl₃) δ: 4.37 (q, J=7.2 Hz, 2H), 4.03 (d,J=1.0 Hz, 3H), 1.39 (t, J=7.1 Hz, 3H), 1.34 (s, 9H).

STEP B: 5-tert-Butyl-4-fluoro-2-methyl-2H-pyrazole-3-carboxylic acid

5-tert-Butyl-4-fluoro-2-methyl-2H-pyrazole-3-carboxylic acid ethyl ester(61.4 mg, 0.269 mmol, prepared as described in the previous step) wasdissolved in MeOH (1 mL) then 2 M NaOH (175 μL, 0.350 mmol) was added.The resulting mixture was stirred at room temperature for 18 h and thesolvent was removed under reduced pressure. The resulting residue wasdissolved in H₂O (10 mL) and acidified to pH ˜2 using 3 M HCl. Theaqueous layer was extracted with DCM (3×5 mL), the combined organicextracts were dried over MgSO₄ and filtered. The solvent was removedunder reduced pressure to yield5-tert-Butyl-4-fluoro-2-methyl-2H-pyrazole-3-carboxylic acid.¹H-NMRH-NMR (400 MHz, CDCl₃) δ: 9.89 (br. s., 1H), 4.06 (d, J=1.0 Hz,3H), 1.36 (s, 9H).

Example E 5-tert-Butyl-4-methoxy-2-methyl-2H-pyrazole-3-carboxylic acid

STEP A: 5-tert-Butyl-4-methoxy-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester

[Bis(trifluoroacetoxy)iodo]benzene (430 mg, 1.00 mmol) was dissolved inanhydrous MeOH (4 mL), the resulting solution was stirred at roomtemperature for 3 min. BF₃.OEt₂ (0.123 mL, 1.00 mmol) was then added viasyringe. Ethyl trimethylacetopyruvate (200 mg, 1.00 mmol) was addeddropwise via syringe and the resulting mixture was stirred at roomtemperature for 12 h. The solvent was removed under reduced pressure andthe resulting residue was dissolved in dry EtOH (2 mL). CH₃NHNH₂ (52.6μL, 1.00 mmol) was added via syringe and the resulting mixture wasstirred at 80° C. for 8 h. The solvent was removed under reducedpressure and the resulting residue was chromatographed on a 24-g SiO₂pre-packed column eluting with 0:1-3:7 EtOAc/hexanes to yield5-tert-butyl-4-methoxy-2-methyl-2H-pyrazole-3-carboxylic acid ethylester. ¹H-NMR (400 MHz, CDCl₃) δ: 4.39 (q, J=7.1 Hz, 2H), 4.03 (s, 3H),3.83 (s, 3H), 1.42 (t, J=7.2 Hz, 3H), 1.34 (s, 9H).

STEP B: 5-tert-Butyl-4-methoxy-2-methyl-2H-pyrazole-3-carboxylic acid

5-tert-Butyl-4-methoxy-2-methyl-2H-pyrazole-3-carboxylic acid ethylester (52.8 mg, 0.220 mmol, prepared as described in the previous step)was dissolved in MeOH (1 mL) then 2 M NaOH (143 μL, 0.286 mmol) wasadded. The resulting mixture was stirred at room temperature for 18 hand the solvent was removed under reduced pressure. The residue wasdissolved in H₂O (10 mL) and acidified to pH ˜2 using 3 M HCl. Theaqueous layer was extracted with EtOAc (3×5 mL) and the combined organicextracts were dried over MgSO₄ and filtered. The solvent was removedunder reduced pressure to yield5-tert-butyl-4-methoxy-2-methyl-2H-pyrazole-3-carboxylic acid. ¹H-NMR(400 MHz, CDCl₃) δ: 11.65 (br. s., 1H), 4.08 (s, 3H), 3.89 (s, 3H), 1.37(s, 9H).

NOTE: Later use of this material led to the conclusion that this productwas contaminated by a small amount of5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid. It was suspected tobe the result of the presence of a small amount of5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid ethyl ester from theprevious Step A but none of the material was available after use toconfirm this suspicion.

Example F4-Chloro-5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylicacid

STEP A:5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester

NaOEt (3.15 mL of a 21-wt % solution in EtOH, 8.43 mmol) was dissolvedin anhydrous toluene (10 mL) and (CO₂CH₂CH₃)₂ (0.881 mL, 6.49 mmol) wasadded. 4,4,4-Trifluoro-3,3-dimethyl-2-butanone (1.00 g, 6.49 mmol) wasadded and the resulting mixture was stirred at room temperature for 24h. The resulting mixture was then acidified to pH ˜5 using 3 M aqueousHCl and the aqueous phase was extracted with EtOAc (3×40 mL). Thecombined extracts were dried over MgSO₄ and filtered. The solvent wasremoved under reduced pressure.

The resulting residue was dissolved in absolute EtOH (20 mL) andCH₃NHNH₂ (0.342 mL, 6.49 mmol) was added dropwise via syringe to thestirred mixture. The resulting mixture was heated to 80° C. for 16 h,and then cooled to room temperature. The solvent was removed underreduced pressure and the resulting residue was chromatographed using a70-g SiO₂ pre-packed column eluting with 0:1-1:4 EtOAc/hexanes to yield5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester. ¹H-NMR (400 MHz, CDCl₃) δ: 6.74 (s, 1H), 4.38 (d, J=48 Hz,2H), 4.33 (q, J=7.1 Hz, 2H), 4.13 (s, 3H), 1.38 (t, J=7.1 Hz, 3H), 1.34(d, J=1.7 Hz, 6H). ¹⁹F NMR (376 MHz, ¹H-coupled, CDCl₃) δ: −221 (t, J=48Hz, 1F).

NOTE: The ¹H-NMR spectra of the product indicated the presence of only 1fluorine, therefore it is believed that the purchased starting ketonewas incorrect, and was actually 4-fluoro-3,3-dimethyl-2-butanone,however none of the starting material was available to confirm thissuspicion.

STEP B:4-Chloro-5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylicacid ethyl ester

5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylic acidethyl ester (722 mg, 3.16 mmol, prepared as described in the previousstep) was dissolved in DCM (5 mL) and SO₂Cl₂ (0.256 mL, 3.16 mmol) wasadded dropwise to the stirred solution. The resulting mixture wasstirred at room temperature for 16 h and then the solvent was removedunder reduced pressure. The resulting residue was chromatographed on a40-g SiO₂ pre-packed column eluting with 0:1-1:4 EtOAc/heptane to yield4-chloro-5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylicacid ethyl ester. ¹H-NMR (400 MHz, CDCl₃) δ: 4.59 (d, J=47 Hz, 2H), 4.40(q, J=7.1 Hz, 2H), 4.08 (s, 3H), 1.43 (d, J=1.7 Hz, 6H), 1.41 (t, J=7.2Hz, 3H).

STEP C:4-Chloro-5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylicacid

4-Chloro-5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylicacid ethyl ester (738 mg, 2.81 mmol, prepared as described in theprevious step) was dissolved in MeOH (3 mL) and 2 M NaOH (1.83 mL, 3.65mmol) was added. The resulting mixture was stirred at room temperaturefor 18 h and then the solvent was removed under reduced pressure. Theresulting residue was dissolved in H₂O (10 mL) and then acidified to pH˜2 with concentrated HCl. The product oiled out of solution andsolidified on standing. The solid was isolated by filtration, washedwith H₂O (2×20 mL), and dried under high vacuum to yield4-Chloro-5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazole-3-carboxylicacid. ¹H-NMR (400 MHz, DMSO-d₆) δ: 13.89 (br. s., 1H), 4.56 (d, J=48 Hz,2H), 4.00 (s, 3H), 1.35 (d, J=1.2 Hz, 6H).

Example G 1-tert-Butyl-5-methyl-1H-pyrazole-4-carboxylic acid

The title compound was prepared according to the procedure as describedin Anderson, K. W., et al., PCT Publication, WO 2007/107470, publishedSep. 27, 2007, as described in Example 54, Steps 2 and 3, pages 97-98,and substituting triethylamine for the sodium acetate reagent in Step 2)from methyl acetoacetate (1.14 mL, 10.6 mmol), DMFDMA (1.48 mL, 11.1mmol), tert-butylhydrazine hydrochloride (1.32 g, 10.6 mmol), and TEA(4.43 mL, 31.8 mmol) to yield methyl1-tert-butyl-5-methyl-1H-pyrazole-4-carboxylate after chromatographyusing a 80-g SiO₂ pre-packed column eluting with 0:1-3:7 EtOAc/heptane.Said product was used directly in the next step without furtherpurification. ¹H-NMR (400 MHz, CDCl₃) δ: 7.78 (s, 1H), 3.80 (s, 3H),2.75 (s, 3H), 1.66 (s, 9H).

A solution of methyl 1-tert-butyl-5-methyl-1H-pyrazole-4-carboxylate inMeOH (20 mL) was treated with 2 M aqueous NaOH solution (7.95 mL, 15.9mmol) for 48 h at room temperature. The solvent was removed underreduced pressure and the resulting residue was dissolved in H₂O (20 mL).The resulting solution was then acidified to pH-2 using 2 M HCl. Theresulting precipitate was isolated by filtration, washed once with H₂O(20 mL), and the solid was dried under high vacuum to yield1-tert-Butyl-5-methyl-1H-pyrazole-4-carboxylic acid. ¹H-NMR (400 MHz,d₆-DMSO) δ: 12.16 (br. s., 1H), 7.67 (s, 1H), 2.69 (s, 3H), 1.59 (s,9H).

Example H2-Methyl-6,6-spirocyclohexyl-2,4,5,6-tetrahydro-cyclopentapyrazole-3-carboxylicacid

STEP A:2-Methyl-2H-6,6-spirocyclohexyl-2,4,5,6-tetrahydro-cyclopentapyrazole-3-carboxylicacid ethyl ester

To a solution of NaOEt in EtOH (2.5 mL, 6.5 mmol, 21% in EtOH) at −10°C., a mixture of spiro[4.5]decan-1-one (432 mg, 2.83 mmol, prepared asdescribed in Molander, G. A., et al., J. Org. Chem., 1993, Vol. 58,7216-7227, according to the general procedure described on page 7225)and diethyloxalate (0.85 mL, 6.2 mmol) in EtOH (5 mL) was added. After15 min the resulting mixture was allowed to warm to room temperature andthen stirred for 6 h. The resulting mixture was treated with 1 N aqueousHCl (10 mL), and the product was extracted thrice with 20 mL of DCM. Theorganic layers were combined, dried (Na₂SO₄), and concentrated. Theresidue obtained was dissolved in EtOH (10 mL) and HOAc (2 mL). To thismixture was added, dropwise, anhydrous hydrazine (0.46 mL, 14 mmol). Theresulting mixture was stirred at room temperature overnight. Water (20mL) was added, and the product was extracted twice with 20 mL of EtOAc.The organic layers were combined, dried (Na₂SO₄), and concentrated. Theresidue obtained was purified on silica (0:100-100:0 v/v EtOAc-hexanes)to yield6,6-spirocyclohexyl-2,4,5,6-tetrahydro-cyclopentapyrazole-3-carboxylicacid ethyl ester as a viscous oil. ¹H-NMR (400 MHz, CDCl₃) δ: 4.34 (q,J=7.2 Hz, 2H), 2.72-2.79 (m, 2H), 2.22-2.29 (m, 2H), 1.40-1.80 (m, 13H),1.35 (t, J=7.2 Hz, 3H).

To a solution of6,6-spirocyclohexyl-2,4,5,6-tetrahydro-cyclopentapyrazole-3-carboxylicacid ethyl ester (185 mg, 0.747 mmol, as prepared above) in DMF (10 mL)was added K₂CO₃ (206 mg, 1.49 mmol). The resulting mixture was stirredfor 10 min and then treated with CH₃I (0.046 mL, 1.49 mmol). Theresulting mixture was stirred overnight and then poured into water (10mL). The product was extracted thrice with EtOAc (20 mL). The organiclayers were combined, dried (Na₂SO₄), and concentrated. The residueobtained was purified on silica gel (0:100-100:0 EtOAc-hexanes) to yieldthe title compound. ¹H-NMR (400 MHz; CDCl₃) δ: 4.22 (q, J=7.1 Hz, 2H),4.05 (s, 3H), 2.66 (t, J=7.1 Hz, 2H), 2.12-2.17 (m, 2H), 1.59-1.72 (m,4H), 1.36-1.48 (m, 6H), 1.27 (t, J=7.1 Hz, 3H).

STEP B:2-Methyl-2H-6,6-spirocyclohexyl-2,4,5,6-tetrahydro-cyclopentapyrazole-3-carboxylicacid

To a solution of2-methyl-2H-6,6-spirocyclohexyl-2,4,5,6-tetrahydro-cyclopentapyrazole-3-carboxylicacid ethyl ester (prepared as described in the previous step, 124 mg,0.472 mmol) in MeOH (6 mL) was added LiOH (56.5 mg, 2.36 mmol) followedby water (2 mL). The resulting mixture was stirred at reflux overnight.The resulting mixture was then allowed to cool to room temperature, andMeOH was removed in vacuo. The resulting mixture was acidified with 1 Naqueous HCl, and the product was extracted thrice with DCM (30 mL). Thecombined organic layers were dried (Na₂SO₄) and concentrated to yieldthe title compound as a white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 10.77(br s, 1H), 4.17 (s, 3H), 2.81 (t, J=7.1 Hz, 2H), 2.13-2.35 (m, 2H),1.64-1.83 (m, 4H), 1.39-1.62 (m, 6H).

Example I 3-tert-Butylisoxazole-5-carboxylic acid

STEP A: 3-tert-Butylisoxazole-5-carboxylic acid methyl ester

Pivaldehyde (1.10 mL, 10.0 mmol) was dissolved in dry DMF (10 mL), andNH₂OH.H₂O (0.590 mL of 55 wt % aqueous solution, 10.5 mmol) was addedvia syringe. The resulting mixture was stirred at room temperature for 4h, NCS (1.40 g, 10.5 mmol) was added in small portions, and theresulting mixture was stirred at room temperature for 1 h. CuSO₄.5H₂O(75.0 mg, 0.300 mmol), methyl propiolate (1.07 mL, 12.0 mmol), and H₂O(5 mL) were added followed by Cu powder (25.0 mg, 0.393 mmol). Theresulting mixture was stirred at room temperature for 16 h and quenchedwith dilute aqueous NH₄OH (2 mL). The aqueous solution was extractedwith hexanes (3×30 mL), and then the combined organic extracts weredried over MgSO₄ and filtered. The solvent was removed under reducedpressure to yield the title compound as a colorless oil. ¹H-NMR (400MHz, CDCl₃) δ: 6.88 (s, 1H), 3.96 (s, 3H), 1.36 (s, 9H).

STEP B: 3-tert-Butylisoxazole-5-carboxylic acid

Following the procedure described in Example A, STEP B above, the titlecompound was prepared from 3-tert-butylisoxazole-5-carboxylic acidmethyl ester (1.68 g, 9.19 mmol, prepared as described in the previousstep) and 2.5 M aqueous NaOH (5.00 mL, 12.5 mmol) as a white solid.¹H-NMR (400 MHz, CDCl₃) δ: 6.99 (s, 1H), 1.38 (s, 9H).

Example J 3-tert-Butyl-4-cyano-isoxazole-5-carboxylic acid

STEP A: 3-tert-Butyl-4-cyano-4,5-dihydro-isoxazole-5-carboxylic acidethyl ester

Pivaldehyde (1.63 mL, 15.0 mmol) was dissolved in anhydrous DMF (15 mL)and H₂NOH.xH₂O (0.860 mL of a 55% aqueous solution, 15.4 mmol) was addedvia syringe. The resulting mixture was stirred at room temperature for 1h and NCS (2.06 g, 15.4 mmol) was added as a solid. The resultingmixture was stirred at room temperature for 1 h and DCM (50 mL) wasadded. The resulting solution was placed in a dropping funnel and addeddropwise over 4 h to a stirred DCM (40 mL) solution of ethylcis-beta-cyanoacrylate (1.98 mL, 16.5 mmol) and TEA (4.18 mL, 30.0mmol). After completion of addition, the resulting mixture was stirredfor 8 h at room temperature and then concentrated under reducedpressure. The resulting residue was dissolved in DCM (50 mL), washedwith H₂O (3×30 mL) and brine (30 mL), and dried over anhydrous MgSO₄ andfiltered. The solvent was removed under reduced pressure. The resultingresidue was chromatographed on a 40-g SiO₂ pre-packed column elutingwith 0:1-3:7 EtOAc/hexanes to yield a mixture (˜1:1.6 as measured by¹H-NMR) of 3-tert-Butyl-4-cyano-4,5-dihydro-isoxazole-5-carboxylic acidethyl ester contaminated with ethyl cis-beta-cyanoacrylate. ¹H-NMR (400MHz, CDCl₃) δ: 5.22 (d, J=5.1 Hz, 1H), 4.55 (d, J=5.1 Hz, 1H), 4.25-4.32(m, 2H), 1.35 (s, 9H), 1.31-1.36 (t, J=7.1 Hz, 3H).

STEP B: 3-tert-Butyl-4-cyano-isoxazole-5-carboxylic acid ethyl ester

3-tert-Butyl-4-cyano-4,5-dihydro-isoxazole-5-carboxylic acid ethyl ester(1.51 g, 2.56 mmol corrected for the measured purity, prepared asdescribed in the previous step) was dissolved in toluene (10 mL) and DDQ(2.41 g, 10.6 mmol) was added as a solid. The resulting mixture washeated to 110° C. for 16 h and then cooled to room temperature anddiluted with hexanes (2 mL). The resulting suspension was filtered andthe precipitate was washed once with toluene (4 mL). The filtrates werecombined and concentrated under reduced pressure. The resulting residuewas chromatographed on a 24-g SiO₂ pre-packed column eluting with0:1-1:4 EtOAc-hexanes to yield3-tert-butyl-4-cyano-isoxazole-5-carboxylic acid ethyl ester. ¹H-NMR(400 MHz, CDCl₃) δ: 4.52 (q, J=7.1 Hz, 2H), 1.49 (s, 9H), 1.43-1.48 (t,J=7.1 Hz, 3H).

STEP C: 3-tert-Butyl-4-cyano-isoxazole-5-carboxylic acid

3-tert-Butyl-4-cyano-isoxazole-5-carboxylic acid ethyl ester (809 mg,3.64 mmol, prepared as described in the previous step) was dissolved inMeOH (9 mL) and 1 M LiOH (4.73 mL, 4.73 mmol) was added. The resultingmixture was stirred at room temperature for 3 h and the solvent wasremoved under reduced pressure. The resulting residue was dissolved inH₂O (10 mL) and extracted with DCM (3×10 mL). The aqueous layer wasacidified to pH ˜2 using 3 M HCl and extracted with EtOAc (3×20 mL). Thecombined extracts were dried over MgSO₄ and filtered. The solvent wasremoved under reduced pressure to yield3-tert-butyl-4-cyano-isoxazole-5-carboxylic acid. ¹H-NMR (400 MHz,CDCl₃) δ: 9.90 (br. s., 1H), 1.50 (s, 9H).

Example K 5-bromo-4-tert-butyl-furan-2-carboxylic acid

STEP A: Methyl 5-bromo-4-tert-butyl-furan-2-carboxylate

The compound was prepared according to the procedure as described inGilman, H., et al., J. Am. Chem. Soc., 1939, Vol. 61, pp 473-478, moreparticular according the general procedure on page 467-477) from methyl5-bromofuran-2-carboxylate (5.00 g, 24.4 mmol), 1-bromooctadecane (8.13g, 24.4 mmol), and anhydrous AlCl₃ (6.50 g, 48.8 mmol) in CS₂ (50 mL) toyield methyl 5-bromo-4-tert-butyl-furan-2-carboxylate. ¹H-NMR (400 MHz,CDCl₃) δ: 7.12 (s, 1H), 3.88 (s, 3H), 1.33 (s, 9H).

STEP B: 5-Bromo-4-tert-butyl-furan-2-carboxylic acid

A solution of methyl 5-bromo-4-tert-butyl-furan-2-carboxylate (1.45 g,5.57 mmol, prepared as described in the previous step) in a mixture ofTHF (15 mL), MeOH (10 mL), and H₂O (5 mL) was treated with 3 M aqueousNaOH solution (3.00 mL, 9.00 mmol) and the resulting mixture was stirredat room temperature for 16 h. The solvent was removed under reducedpressure and the residue was dissolved in H₂O (60 mL) and extracted withEt₂O (2×30 mL). The aqueous layer was acidified to pH-2 using 2 M HCl.The precipitate was isolated by filtration, washed with H₂O (20 mL), andair-dried to yield 5-bromo-4-tert-butyl-furan-2-carboxylic acid. Thefiltrate was extracted with EtOAc (3×20 mL) and the combined extractswere dried over MgSO₄ and filtered. The solvent was removed underreduced pressure to yield a second crop of5-bromo-4-tert-butyl-furan-2-carboxylic acid. ¹H-NMR (400 MHz, CDCl₃) δ:7.25 (s, 1H), 1.35 (s, 9H).

Example L 4-tert-butyl-furan-2-carboxylic acid

The title compound was prepared according to the procedure as describedin Gilman, H., et al., J. Am. Chem. Soc., 1935, Vol. 57, pp 909-912,more particularly, as described on page 910) by treating a diluteaqueous NH₃ solution (made by dilution of 1 mL of 29.3% aqueous NH₃ with9 mL of H₂O) of 5-bromo-4-tert-butyl-furan-2-carboxylic acid (500 mg,2.02 mmol, prepared as described in Example K, Step B) with Zn dust (265mg, 4.05 mmol) to yield the title compound. ¹H-NMR (400 MHz, CDCl₃) δ:7.40 (d, J=1.0 Hz, 1H), 7.28 (d, J=1.2 Hz, 1H), 1.26 (s, 9H).

Example M 5-isopropylthiophene-3-carboxylic acid

The title compound was prepared by modifying the procedure as describedin Stanetty, et al., Monatshefte für Chemie (1989), 120(1), 65-72, forthe synthesis of compounds (21) and (22), page 70, and substitutingpentyl nitrite with tert-butyl nitrite.

Example N 4-Isopropyl-thiophene-2-carboxylic acid

The title compound was prepared according to the procedure described inAlcaraz, L., et al., PCT Publication WO 2009/098448 A1, published Aug.13, 2009, Example 74, Steps (a) and (b), pages 282-283.

Example O 4-tert-butyl-1-methyl-1H-imidazole-2-carboxylic acid

STEP A: 3,3-Dimethyl-1-methylamino-butan-2-one hydrochloride

A solution of 1-bromopinacolone (5.00 g, 27.9 mmol) in acetonitrile (8mL) was added to a solution of methylamine (6.98 mL, 55.9 mmol, ˜8 M inabsolute alcohol) at 0° C. over 5 min under Ar. The resulting mixturewas stirred at 0° C. for 3 h. Dry diethyl ether (200 mL) was added andthe resulting white solid was removed by filtration. The filtrate wasconcentrated in vacuo and the residue was treated with ethanol (20 mL).To the resulting solution at 0° C. was added 1.0 N HCl in diethyl ether(22.3 mL) over 10 min. The resulting mixture was treated with diethylether (150 mL) and the resulting white solid was collected by filtrationand dried in vacuo to yield 3,3-dimethyl-1-methylamino-butan-2-onehydrochloride as a white solid. ¹H-NMR (400 MHz, CD₃OD) δ: 4.28 (s, 2H),2.72 (s, 3H), 1.21 (s, 9H). Mass Spectrum (LCMS, ESI pos.) CalculatedFor C₇H₁₅NO: 130.1 (M+H). Measured: 130.1.

STEP B: 4-tert-Butyl-1-methyl-1H-imidazole

A mixture of 3,3-dimethyl-1-methylamino-butan-2-one hydrochloride (1.00g, 6.04 mmol, prepared as described in the previous step) in formamide(12 mL, 302 mmol) was stirred at 200° C. for 3 h under microwaveirradiation. After cooling to room temperature, the resulting mixturewas treated with 3N NaOH (30 mL) and extracted with toluene (3×50 mL).The combined organic layers were washed with H₂O (30 mL), brine (30 mL)and then dried with Na₂SO₄. The solvent was evaporated in vacuo and theresidue was purified by flash chromatography on silica gel (0:100-10:90MeOH/DCM) to yield 4-tert-butyl-1-methyl-1H-imidazole as a colorlessoil. ¹H-NMR (400 MHz, CDCl₃) δ: 7.32 (s, 1H), 6.55 (s, 1H), 3.59 (s,3H), 1.25 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₈H₁₄N₂: 139.1 (M+H). Measured: 139.1.

STEP C: 4-tert-Butyl-1-methyl-1H-imidazole-2-carboxylic acid methylester

To a mixture of 4-tert-butyl-1-methyl-1H-imidazole (800 mg, 5.79 mmol,prepared as described in the previous step) and triethylamine (2.00 mL,14.4 mmol) in acetonitrile (10 mL) at −30° C. was added methylchloroformate (0.890 mL, 11.6 mmol) slowly under Ar. The resultingmixture was warmed to room temperature and continued to stir for 16 h.The resulting mixture was then treated with EtOAc (50 mL) and washedwith H₂O (2×20 mL), brine (20 mL) and then dried with Na₂SO₄. Thesolvent was evaporated in vacuo and the residue was purified by flashchromatography on silica gel (0:100-10:90 MeOH/DCM) to yield4-tert-butyl-1-methyl-1H-imidazole-2-carboxylic acid methyl ester as acolorless oil. ¹H-NMR (400 MHz, CDCl₃) δ: 6.78 (s, 1H), 3.95 (s, 3H),3.92 (s, 3H), 1.30 (s, 9H). Mass Spectrum (LCMS, ESI pos.) CalculatedFor C₁₀H₁₆N₂O₂: 197.1 (M+H). Measured: 197.1.

STEP D: 4-tert-butyl-1-methyl-1H-imidazole-2-carboxylic acid

A mixture of 4-tert-butyl-1-methyl-1H-imidazole-2-carboxylic acid methylester (680 mg, 3.46 mmol, prepared as described in the previous step)and 1N NaOH (3.81 mL, 3.81 mmol) in MeOH (10 mL) was stirred at roomtemperature for 2 h. To the resulting mixture was then added 1.0 Naqueous HCl (3.85 mL). The solvent was removed under reduced pressureand the residue was treated with DCM (50 mL). The solid was filtered offthrough diatomaceous earth and washed with DCM. The combined organiclayers were dried with Na₂SO₄ and concentrated in vacuo to yield4-tert-butyl-1-methyl-1H-imidazole-2-carboxylic acid as a white solid.¹H-NMR (400 MHz, CDCl₃) δ: 7.00 (s, 1H), 4.18 (s, 3H), 1.49 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₉H₁₄N₂O₂: 183.1 (M+H).Measured: 183.1.

Examples 1 through 35 which follow herein, described the synthesis ofrepresentative compounds of formula (I).

Example 12-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-chloro-5-(2-trifluoromethyl-phenyl-1H-imidazo[4,5-b]pyridinesodium salt (Compound #5)

STEP A: 4-Chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine

A solution of 4,6-dichloro-pyridin-2-ylamine (1.00 g, 6.14 mmol) in DME(75 mL) and water (50 mL) was treated with Cs₂CO₃ (6.00 g, 18.4 mmol)and 2-(trifluoromethyl)phenylboronic acid (1.52 g, 7.98 mmol). Theresulting mixture was degassed by heating under a stream of Ar.Cl₂Pd(dppf).DCM (270 mg, 0.368 mmol) was added, and the mixture washeated to 80° C. for 24 h. The cooled mixture was diluted with EtOAc (70mL) and washed twice with water (50 mL). The combined aqueous layerswere extracted twice with EtOAc (50 mL). The combined organic extractswere dried over MgSO₄ and concentrated in vacuo. The residue waspurified on a 115-g SEPRA Si 35 SPE silica column (Flow rate=30 mL/min;Eluent=EtOAc-hexanes, 1:19 for 15 min, 1:19 to 1:3 over 40 min, then 1:3until product eluted) to yield4-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine as an off-whitesolid. ¹H-NMR (400 MHz, CDCl₃) δ: 7.74 (d, J=7.6 Hz, 1H), 7.59 (t, J=7.5Hz, 1H), 7.50 (t, J=7.7 Hz, 1H), 7.45 (d, J=7.6 Hz, 1H), 6.77 (d, J=1.5Hz, 1H), 6.53 (d, J=1.5 Hz, 1H), 4.59 (br. s., 2H). Mass Spectrum (LCMS,ESI pos.): Calculated for C₁₂H₈N₂ClF₃: 273.0 (M+H). Measured: 273.0.

STEP B: 4-Chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine

4-Chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine (617.5 mg, 2.27mmol, prepared as described in STEP A above) was cooled to 0° C. andtreated slowly with H₂SO₄ (10 mL). The mixture was stirred at 0° C. for1 h. Nitric acid (133 μL, 2.94 mmol) was added slowly, and the mixturecontinued to stir at 0° C. for an additional 1.5 h. Ice (50 mL) wasadded. A precipitate formed and was filtered, dissolved in DCM (70 mL),and washed with saturated aqueous NaHCO₃ (70 mL). The aqueous layer wasextracted with DCM (30 mL). The combined organic extracts were driedover MgSO₄ and concentrated in vacuo. The residue was purified on a 40-gSEPRA Si 35 SPE column (Flow rate=20 mL/min; Eluent=EtOAc-hexanes, 1:19for 15 min, then 1:19 to 1:3 over 40 min) to yield4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine as ayellow solid. The basic mother liquor and acidic filtrate were carefullycombined, made basic with 1 N aqueous NaOH, and extracted twice with DCM(100 mL). The combined organic extracts were dried over MgSO₄ andconcentrated in vacuo to yield additional product. ¹H-NMR (400 MHz,CDCl₃) δ: 7.76-7.90 (m, 1H), 7.55-7.71 (m, 2H), 7.46 (d, J=7.3 Hz, 1H),6.93 (s, 1H), 6.11 (br. s., 2H). Mass Spectrum (LCMS, APCI pos.):Calculated for C₁₂H₇N₃O₂ClF₃: 318.0 (M+H). Measured: 318.0.

STEP C: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide

A solution of4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine (87.5mg, 0.275 mmol, prepared as described in STEP B above) in THF (10 mL)was treated with NaH (33.1 mg, 0.826 mmol, 60% dispersion in oil), andthe mixture was allowed to stir at room temperature for 1 h.Simultaneously, a solution of5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid (77.6 mg,0.358 mmol, prepared as described in Example B above) in DCM (10 mL) wastreated with oxalyl chloride (31.2 μL, 0.358 mmol), and DMF (2 drops),and the mixture was stirred at room temperature for 1 h. Volatilecomponents were removed in vacuo, to yield5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carbonyl chloride as asolid. The solid was taken up in anhydrous THF (6 mL) and this acidchloride solution was then added to the sodium anilide solution, asprepared above, and the resulting mixture was stirred at roomtemperature for 1 h. The mixture was quenched with saturated aqueousNH₄Cl (50 mL) and extracted twice with EtOAc (40 mL and 25 mL). Thecombined organic extracts were dried over MgSO₄ and concentrated invacuo. The residue was purified on an 8-g SEPRA Si 35 SPE column (Flowrate=10 mL/min; Eluent=EtOAc-hexanes, 1:19 for 15 min, then 1:19 to 1:3over 40 min) to yield5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide as acolorless glassy solid. Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₁H₁₈N₅O₃Cl₂F₃: 516.2 (M+H). Measured: 516.2.

STEP D: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[3-amino-4-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide(109 mg, 0.211 mmol, prepared as described in the previous step) in EtOH(5 mL) and water (2.5 mL) was treated with NH₄Cl (113 mg, 2.11 mmol) andiron powder (58.9 mg, 1.06 mmol). The mixture was heated to 60° C. for 5h, then the EtOH was evaporated in vacuo. The remaining aqueous mixturewas diluted with water (30 mL) and extracted twice with EtOAc (25 mL).The combined organic extracts were dried over MgSO₄ and concentrated invacuo. The residue was purified on a 12-g SEPRA Si 35 SPE column (Flowrate=15 mL/min; Eluent=EtOAc-hexanes, 1:99 for 10 min, then 1:99 to 1:4over 40 min) to yield5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[3-amino-4-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide as acolorless glassy solid. Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₁H₂₀N₅OCl₂F₃: 486.1 (M+H). Measured: 486.2.

STEP E:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-chloro-5-(2-trifluoromethyl-phenyl-1H-imidazo[4,5-b]pyridine

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [3-amino-4-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide(54.0 mg, 0.111 mmol, prepared as described in STEP D above) in1,4-dioxane (10 mL) was treated with CSA (51.6 mg, 0.222 mmol), and themixture was heated to 100° C. under a reflux condenser for 3 h. Thecooled resulting mixture was diluted with EtOAc (30 mL) and washed withsaturated aqueous NaHCO₃ (20 mL). The organic extract was dried overMgSO₄ and concentrated in vacuo. The residue was purified on an 8-gSEPRA Si 35 SPE column (Flow rate=10 mL/min; Eluent=EtOAc-hexanes, 1:99for 10 min, then 1:99 to 1:4 over 40 min) to yield 28.2 mg (54%) of2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-chloro-5-(2-trifluoromethyl-phenyl-1H-imidazo[4,5-b]pyridine.Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₁H₁₈N₅Cl₂F₃: 468.1(M+H). Measured: 468.2.

STEP F:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-chloro-5-(2-trifluoromethyl-phenyl-1H-imidazo[4,5-b]pyridinesodium salt

2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-chloro-5-(2-trifluoromethyl-phenyl-1H-imidazo[4,5-b]pyridine(28.2 mg, 0.0602 mmol) was dissolved in anhydrous MeOH (4 mL) andtreated with NaOMe (120 μL, 0.060 mmol, 0.5 M in MeOH) at roomtemperature for 1 h. The resulting mixture was concentrated in vacuo toyield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-chloro-5-(2-trifluoromethyl-phenyl-1H-imidazo[4,5-b]pyridinesodium salt as a white solid. ¹H-NMR (400 MHz, CD₃OD) δ: 7.69 (d, J=7.6Hz, 1H), 7.55-7.61 (m, 1H), 7.45-7.52 (m, 2H), 7.01 (s, 1H), 3.81 (s,3H), 1.34 (s, 9H).

Following the procedures described in Example 1 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 5 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-chloro-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine hydro- chloride¹H-NMR (400 MHz, CD₃OD) δ: 7.75 (d, J = 7.8 Hz, 1H), 7.64 (t, J = 7.2Hz, 1H), 7.57 (t, J = 7.5 Hz, 1H), 7.51 (d, J = 7.3 Hz, 1H), 7.42 (s,1H), 4.51 (s, 1H), 3.97 (s, 3H), 1.35 (s, 9H). Mass Spectrum (LCMS, APCIpos.): Calculated for C₂₁H₁₈Cl₂F₃N₅: 468.1 (M + H); Measured: 468.1.Cmpd 6 2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-7-chloro-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine sodium salt ¹H-NMR(400 MHz, CD₃OD) δ: 7.79 (d, J = 7.6 Hz, 1H), 7.64-7.71 (m, 1H),7.54-7.62 (m, 2H), 7.07 (s, 1H), 6.80 (s, 1H), 4.25 (s, 3H), 1.36 (s,9H). Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₁H₁₉N₅ClF₃: 434.1(M + H); Measured: 434.2

Example 28-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purinehydrochloride (Compound #3)

STEP A: 5-tert-Butyl-4-chloro-2-methyl-2H-[pyrazole-3-carboxylic acid[6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide

A solution of6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-ylamine (109mg, 0.365 mmol, prepared as described in Example 1, Step A) in THF (10mL) was treated with NaH (43.9 mg, 1.10 mmol, 60% dispersion in oil),and the mixture was allowed to stir at room temperature for 1 h.Simultaneously, a solution of5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid (103 mg,0.475 mmol, prepared as described in Example B above) in DCM (10 mL) wastreated with oxalyl chloride (41.5 μL, 0.475 mmol) and DMF (2 drops),and the mixture was stirred at room temperature for 1 h. Volatilecomponents were removed in vacuo, and the residue was taken up inanhydrous THF (6 mL). The above-prepared acid chloride solution wasadded to the sodium anilide solution above, and the resulting mixturewas stirred at room temperature for 15 min. The resulting mixture wasthen treated with saturated aqueous NH₄Cl (50 mL) and extracted twicewith EtOAc (50 mL). The residue was purified on a 24-g SEPRA Si 50 SPEcolumn (Flow rate=20 mL/min; Eluent=EtOAc-hexanes, 1:99 for 15 min, then1:99 to 3:7 over 40 min) to yield5-tert-butyl-4-chloro-2-methyl-2H-[pyrazole-3-carboxylic acid[6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide asan off-white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 9.59 (s, 1H), 7.81-7.88(m, 2H), 7.60-7.72 (m, 2H), 4.11 (s, 3H), 2.82 (s, 3H), 1.40 (s, 9H).Mass Spectrum (LCMS, APCI pos.): Calculated for C₂₁H₂₀N₆O₃ClF₃: 497.1(M+H). Measured: 497.2.

STEP B:8-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purine

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid[6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide(138 mg, 0.278 mmol, prepared as described in STEP A above) in AcOH (10mL) was treated with iron powder (77.5 mg, 1.39 mmol), and the mixturewas heated to 100° C. for 4 h. The cooled mixture was diluted with EtOAc(50 mL) and washed with saturated aqueous NaHCO₃ (50 mL). The aqueouslayer was extracted again with EtOAc (50 mL). The combined organicextracts were dried over MgSO₄ and concentrated in vacuo. The residuewas purified on a 24-g SEPRA Si 50 SPE column (Flow rate=20 mL/min;Eluent=EtOAc-hexanes, 1:9 for 15 min, then 1:9 to 2:3 over 40 min) toyield8-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purineas a white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 10.66 (br. s., 1H), 7.82(d, J=7.6 Hz, 1H), 7.72-7.77 (m, 1H), 7.66 (t, J=7.5 Hz, 1H), 7.54-7.62(m, 1H), 4.40 (s, 3H), 2.95 (s, 3H), 1.45 (s, 9H). Mass Spectrum (LCMS,ESI pos.): Calculated for C₂₁H₂₀N₆ClF₃: 449.1 (M+H). Measured: 449.1.

STEP C:8-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purinehydrochloride

A solution of8-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purine(99.7 mg, 0.222 mmol, prepared as in STEP B above) in EtOH (6 mL) wastreated with HCl (44.4 μL, 0.222 mmol, 5 M in IPA) at room temperaturefor 1.5 h and concentrated in vacuo. EtOH (0.5 mL) was added, and theresulting glassy solid was dissolved using sonication and heating.Hexanes (5 mL) were added, and the resulting mixture was concentrated invacuo. The resulting foamy solid was triturated with hexanes, filtered,and air-dried to yield8-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purinehydrochloride as a white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 7.82-8.03 (m,2H), 7.65-7.82 (m, 2H), 4.39 (s, 3H), 3.34 (br. s., 3H), 1.45 (s, 9H).Mass Spectrum (LCMS, APCI pos.): Calculated for C₂₁H₂₀N₆ClF₃: 449.1(M+H). Measured: 449.2.

Following the procedures described in Example 2 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 4 8-(3-tert-butyl-isoxazol-5-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purine sodium salt ¹H-NMR (400 MHz, CD₃OD) δ: 7.70 (d, J =7.8 Hz, 1H), 7.57-7.64 (m, 1H), 7.48-7.57 (m, 2H), 6.95 (s, 1H), 2.72(s, 3H), 1.32 (s, 9H). Mass Spectrum (LCMS, APCI pos.) Calculated ForC₂₀H₁₈N₅OF₃: 402.2 (M + H), Measured: 402.2

Example 38-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purinesodium salt (Compound #3)

STEP A:6-Methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-ylamine

To a solution of 2-chloro-6-methyl-5-nitro-pyrimidin-4-ylamine (920 mg,4.89 mmol) in 1,4-dioxane (50 mL) was treated with(2-trifluoromethylphenyl)boronic acid (1.3 g, 6.8 mmol), K₃PO₄ (2.07 g,9.78 mmol), and (dppf)PdCl₂.DCM (318 mg, 0.487 mmol) was heated to 100°C. for 4 h under Ar. The cooled mixture was filtered through a pad ofdiatomaceous earth, diluted with water, and extracted thrice with EtOAc.The combined organic layers were dried over MgSO₄ and concentrated invacuo. The residue was purified on silica (0:100 v/v to 100:0 v/vEtOAc-hexanes over 20 min) to yield6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-ylamine.¹H-NMR (400 MHz, CDCl₃) δ: 7.80 (d, J=7.6 Hz, 1H), 7.71-7.75 (m, 1H),7.65 (t, J=6.9 Hz, 1H), 7.57-7.62 (m, 1H), 2.84 (s, 3H).

STEP B:8-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purinesodium salt

Following the procedure as described in STEPS C, D, E in Example 1,above, the title compound was prepared from5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid (108 mg,0.499 mmol, prepared as described in Example B above) and4-methyl-6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-ylamine(149 mg, 0.500 mmol, prepared as in STEP A above) as an off-white solid.¹H-NMR (400 MHz; CD₃OD) δ: 7.78-7.83 (m, 1H), 7.68-7.74 (m, 1H),7.60-7.67 (m, 2H), 2.78-2.85 (m, 3H), 1.44 (s, 9H). Mass Spectrum (LCMS,ESI pos.) Calculated for C₂₁H₂₀ClF₃N₆: 449.1 (M+H). Measured: 449.2.

Example 42-(3-tert-Butyl-isoxazol-5-yl)-7-chloro-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine(Compound #7)

STEP A: 3-tert-Butyl-isoxazole-5-carboxylic acid[4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide

A solution of4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine (100 mg,0.315 mmol, prepared as described in Example 1, Step B above) in THF (10mL) was treated with NaH (37.8 mg, 0.944 mmol, 60% dispersion in oil),and the mixture was allowed to stir at room temperature for 1 h.Simultaneously, a solution of 3-tert-butyl-isoxazole-5-carboxylic acid(69.2 mg, 0.409 mmol, prepared as described in Example I above) in DCM(10 mL) was treated with oxalyl chloride (35.7 μL, 0.409 mmol) and DMF(2 drops), and the resulting mixture was stirred at room temperature for1 h. Volatile components were removed in vacuo, and the residue wastaken up in anhydrous THF (6 mL). The above-prepared acid chloridesolution was added to the sodium anilide solution above, and theresulting mixture was stirred at room temperature for 15 min. Theresulting mixture was then quenched with saturated aqueous NH₄Cl (20 mL)and extracted twice with EtOAc (30 mL). The combined organic extractswere dried over MgSO₄ and concentrated in vacuo. The residue waspurified on a 25-g SEPRA Si 50 SPE column (Flow rate=20 mL/min;Eluent=EtOAc-hexanes, 1:99 for 10 min, then 1:99 to 1:3 over 40 min) toyield 3-tert-butyl-isoxazole-5-carboxylic acid[4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide as ayellow solid. Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₁H₁₆N₄O₄ClF₃: 469.1 (M+H). Measured: 469.1.

STEP B: 3-tert-Butyl-isoxazole-5-carboxylic acid[3-amino-4-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide

A solution of 3-tert-butyl-isoxazole-5-carboxylic acid[4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide (40.7mg, 0.0868 mmol, prepared as described in STEP A above) in EtOH (5 mL)and water (2.5 mL) was treated with ammonium chloride (46.4 mg, 0.868mmol) and iron powder (24.2 mg, 0.434 mmol), and the mixture was stirredat 50° C. for 3 h. The cooled mixture was concentrated in vacuo andpartitioned between EtOAc (25 mL) and water (20 mL). The aqueous layerwas extracted with EtOAc (20 mL). The combined organic extracts weredried over MgSO₄ and concentrated in vacuo. The residue was purified ona 12-g SEPRA Si 50 SPE column (Flow rate=20 mL/min;Eluent=EtOAc-hexanes, 1:99 for 10 min, then 1:99 to 1:3 over 40 min) toyield 3-tert-butyl-isoxazole-5-carboxylic acid[3-amino-4-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide as ayellow solid. Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₁H₁₈N₄O₂ClF₃: 439.1 (M+H). Measured: 439.1.

STEP C:2-(3-tert-Butyl-isoxazol-5-yl)-7-chloro-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine

A solution of 3-tert-butyl-isoxazole-5-carboxylic acid[3-amino-4-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide (36.2mg, 0.0825 mmol, prepared as described in STEP B above) in 1,4-dioxane(10 mL) was treated with (+)-10-camphorsulfonic acid (38.3 mg, 0.165mmol), and the mixture was heated to 100° C. for 5 h. The cooled mixturewas diluted with EtOAc (20 mL) and washed with saturated aqueous NaHCO₃(20 mL). The organic extract was dried over MgSO₄ and concentrated invacuo. The residue was purified on an 8-g SEPRA Si 35 SPE column (Flowrate=15 mL/min; Eluent=EtOAc-hexanes, 1:99 for 10 min, then 1:99 to 1:3over 40 min) to yield2-(3-tert-butyl-isoxazol-5-yl)-7-chloro-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridineas a white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 7.77 (d, J=7.8 Hz, 1H),7.58-7.64 (m, 1H), 7.50-7.58 (m, 2H), 7.49 (s, 1H), 7.16 (s, 1H), 1.88(br. s., 1H), 1.39 (s, 9H). Mass Spectrum (LCMS, APCI pos.): Calculatedfor C₂₀H₁₆N₄OClF₃: 421.1 (M+H). Measured: 421.1.

Example 52-(3-tert-Butyl-isoxazol-5-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]-pyridinesodium salt (Compound #8)

STEP A: 6-Chloro-2-methoxy-3-nitro-pyridin-4-ylamine

2,6-Dichloro-3-nitro-pyridin-4-ylamine (733 mg, 3.52 mmol) was placed ina 48 mL pressure vessel fitted with a magnetic stir bar and treated withNaOMe (7.05 mL, 3.52 mmol, 0.5 M in MeOH). The vessel was sealed andheated to 100° C. for 2 h. The cooled mixture was treated with aceticacid (0.25 mL) in diethyl ether (50 mL). The precipitate was filteredand washed with ether, and the filtrate was concentrated in vacuo. Theresidue was purified on a 40-g SEPRA Si 35 SPE column (Flow rate=25mL/min; Eluent=EtOAc-hexanes, 1:19 for 15 min, then 1:19 to 1:4 over 40min) to yield 6-chloro-2-methoxy-3-nitro-pyridin-4-ylamine as a paleyellow solid. ¹H-NMR (400 MHz, CDCl₃) δ: 6.36 (s, 1H), 6.14 (br. s.,2H), 4.04 (s, 3H).

STEP B:2-Methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-4-pyridin-4-ylamine

A solution of 6-chloro-2-methoxy-3-nitro-pyridin-4-ylamine (500 mg, 2.46mmol, prepared as described in STEP A above) in DME (20 mL) and water (6mL) was treated with Cs₂CO₃ (2.40 g, 7.37 mmol) and2-trifluoromethylphenylboronic acid (560 mg, 2.95 mmol). The resultingmixture was degassed by heating to 80° C. under a stream of Ar.Cl₂Pd(dppf).DCM (121 mg, 0.147 mmol) was added, and the mixture washeated to 80° C. for 15 h. The cooled mixture was diluted with water (50mL) and extracted twice with EtOAc (60 mL). The combined organicextracts were dried over MgSO₄ and concentrated in vacuo. The residuewas purified on a 24-g SEPRA Si 50 SPE column (Flow rate=20 mL/min;Eluent=EtOAc-hexanes, 1:19 for 5 min, then 1:19 to 1:3 over 40 min) toyield 2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-4-pyridin-4-ylamineas a yellow solid. ¹H-NMR (400 MHz, CDCl₃) δ: 7.77 (d, J=8.3 Hz, 1H),7.58-7.65 (m, 1H), 7.52-7.58 (m, 1H), 7.48 (d, J=7.6 Hz, 1H), 6.42 (s,1H), 4.03 (s, 3H). Mass Spectrum (LCMS, APCI pos.): Calculated forC₁₃H₁₀N₃O₃F₃: 314.1 (M+H). Measured: 314.1.

STEP C: 3-tert-Butyl-isoxazole-5-carboxylic acid[2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide

A solution of2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine (163mg, 0.519 mmol, prepared as described in STEP B above) in THF (10 mL)was treated with NaH (62.2 mg, 1.56 mmol, 60% dispersion in oil), andthe mixture was allowed to stir at room temperature for 1 h.Simultaneously, a solution of 3-tert-butyl-isoxazole-5-carboxylic acid(114 mg, 0.674 mmol, prepared as described in Example I above) inanhydrous DCM (10 mL) was treated with oxalyl chloride (58.8 μL, 0.674mmol) and DMF (2 drops), and the mixture was stirred at room temperaturefor 1 h. Volatile components were removed in vacuo, and the residue wastaken up in anhydrous THF (6 mL). The above-prepared acid chloridesolution was added to the sodium anilide solution above, and the mixturewas stirred at room temperature for 1 h. The mixture was quenched withsaturated aqueous NH₄Cl (20 mL) and extracted twice with EtOAc (25 mL).The residue was purified on a 12-g SEPRA Si 50 SPE column (Flow rate=15mL/min; Eluent=EtOAc-hexanes, 1:99 for 10 min, then 1:99 to 1:4 over 40min) to yield 3-tert-butyl-isoxazole-5-carboxylic acid[2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide as awhite solid. ¹H-NMR (400 MHz, CDCl₃) δ: 10.62 (s, 1H), 8.39 (s, 1H),7.82 (d, J=7.3 Hz, 1H), 7.63-7.69 (m, 1H), 7.58-7.63 (m, 1H), 7.56 (d,J=7.6 Hz, 1H), 6.98 (s, 1H), 4.09 (s, 3H), 1.38 (s, 9H). Mass Spectrum(LCMS, APCI pos.): Calculated for C₂₁H₁₉N₄O₅F₃: 465.1 (M+H). Measured:465.1.

STEP D:2-(3-tert-Butyl-isoxazol-5-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]-pyridine

A solution of 3-tert-butyl-isoxazole-5-carboxylic acid[2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide (110mg, 0.237 mmol, prepared as described in STEP C above) in AcOH (5 mL)was treated with iron powder (66.1 mg, 1.18 mmol), and the mixture washeated to 100° C. for 3 h. The AcOH was removed in vacuo. The residuewas taken up in saturated aqueous NaHCO₃ (50 mL) and extracted twicewith EtOAc (50 mL). The combined organic extracts were dried over MgSO₄and concentrated in vacuo. The residue was purified on a 12-g SEPRA Si50 SPE column (Flow rate=15 mL/min; Eluent=EtOAc-hexanes, 1:99 for 10min, then 1:99 to 1:3 over 40 min). The chromatography was repeated asabove to yield2-(3-tert-butyl-isoxazol-5-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]-pyridineas a white solid. Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₁H₁₉N₄O₂F₃: 417.1 (M+H). Measured: 417.1.

STEP E:2-(3-tert-Butyl-isoxazol-5-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]-pyridinesodium salt

A solution of2-(3-tert-butyl-isoxazol-5-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine(67.3 mg, 0.162 mmol, prepared as described in STEP D above) in MeOH (5mL) was treated with NaOMe (323 μL, 0.162 mmol, 0.5 M in MeOH), and themixture was stirred at room temperature for 2 h. The solvents wereevaporated in vacuo to yield2-(3-tert-butyl-isoxazol-5-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]-pyridinesodium salt as an off-white solid. ¹H-NMR (400 MHz, CD₃OD) δ: 7.66 (d,J=7.8 Hz, 1H), 7.49-7.57 (m, 2H), 7.38-7.45 (m, 1H), 7.13 (s, 1H), 6.79(s, 1H), 3.97 (s, 3H), 1.30 (s, 9H). Mass Spectrum (LCMS, APCI pos.):Calculated for C₂₁H₁₉N₄O₂F₃: 417.1 (M+H). Measured: 417.1.

Example 62-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinesodium salt (Compound #9)

STEP A: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide

A solution of2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine (162mg, 0.517 mmol, prepared as described in Example 5, Step B above) in THF(10 mL) was treated with NaH (62.1 mg, 1.55 mmol, 60% dispersion in oil)at room temperature, and the mixture was allowed to stir for 1 h.Simultaneously, a solution of5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid (168 mg,0.776 mmol, prepared as described in Example B above) in anhydrous DCM(10 mL) was treated with oxalyl chloride (67.7 μL, 0.776 mmol) and DMF(2 drops), and the mixture was stirred at room temperature for 1 h.Volatile components were removed in vacuo, and the residue was taken upin anhydrous THF (6 mL). The above-prepared acid chloride solution wasadded to the sodium anilide solution above, and the mixture was stirredat room temperature for 1 h. The mixture was quenched with saturatedaqueous NH₄Cl (20 mL) and extracted twice with EtOAc (25 mL). Theresidue was purified on a 12-g SEPRA Si 50 SPE column (Flow rate=15mL/min; Eluent=EtOAc-hexanes, 1:99 for 10 min, then 1:99 to 3:17 over 40min) to yield 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amideas a white solid. Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₂H₂₁N₅O₄ClF₃: 512.1 (M+H). Measured: 512.1.

STEP B:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide(149 mg, 0.291 mmol, prepared as described in STEP A above) in AcOH (10mL) was treated with iron powder (81.3 mg, 1.46 mmol), and the resultingmixture was heated to 100° C. for 1.5 h. The cooled mixture wasconcentrated in vacuo, taken up in saturated aqueous NaHCO₃ (50 mL), andextracted twice with EtOAc (40 mL). The combined organic extracts weredried over MgSO₄ and concentrated in vacuo. The residue was purified ona 12-g SEPRA Si 50 SPE column (Flow rate=15 mL/min;Eluent=EtOAc-hexanes, 1:99 for 10 min, then 1:99 to 1:4 over 40 min) toyield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridineas a white solid. Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₂H₂₁N₅OClF₃: 464.1 (M+H). Measured: 464.2.

STEP C:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinesodium salt

A solution of2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine(122 mg, 0.263 mmol, prepared as described in STEP B above) in MeOH (6mL) was treated with NaOMe (526 μL, 0.263 mmol), and the resultingmixture was stirred at room temperature for 1.5 h. The solvent wasremoved in vacuo to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinesodium salt as a white solid. ¹H-NMR (400 MHz, CD₃OD) δ: 7.77 (d, J=7.8Hz, 1H), 7.60-7.66 (m, 2H), 7.49-7.56 (m, 1H), 7.26 (s, 1H), 4.08 (s,3H), 3.88 (s, 3H), 1.44 (s, 9H). Mass Spectrum (LCMS, ESI pos.):Calculated for C₂₂H₂₁N₅OClF₃: 464.1 (M+H). Measured: 464.2.

Following the procedures described in Example 6 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 9 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine methanesulfonicacid salt ¹H-NMR (400 MHz, CD₃OD) δ: 7.94 (d, J = 7.8 Hz, 1H), 7.75-7.86(m, 2H), 7.70 (d, J = 7.3 Hz, 1H), 7.55 (d, J = 2.5 Hz, 1H), 4.67-4.75(m, 3H), 4.16 (s, 3H), 2.70 (s, 3H), 1.46 (s, 9H). Mass Spectrum (LCMS,APCI pos.): Calculated for C₂₂H₂₁ClF₃N₅O: 464.1 (M + H); Measured:464.2. Cmpd 92-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine hydrochloride¹H-NMR (400 MHz, CD₃OD) δ: 7.75 (d, J = 7.8 Hz, 1H), 7.64 (t, J = 7.2Hz, 1H), 7.57 (t, J = 7.5 Hz, 1H), 7.51 (d, J = 7.3 Hz, 1H), 7.42 (s,1H), 4.51 (s, 1H), 3.97 (s, 3H), 1.35 (s, 9H). Mass Spectrum (LCMS, APCIpos.): Calculated for C₂₁H₁₈Cl₂F₃N₅: 468.1 (M + H); Measured: 468.1.

Example 72-(3-tert-Butyl-isoxazol-5-yl)-7-trifluoromethyl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine(Compound #10)

STEP A:(6-Chloro-4-trifluoromethyl-pyridin-2-yl)-(4-methoxy-benzyl)-amine

A solution of 2,6-dichloro-4-trifluoromethyl-pyridine (5.04 g, 23.3mmol) in pyridine (10 mL) was treated with 4-methoxybenzylamine (9.19mL, 70.0 mmol) and heated to 110° C. for 26 h. The mixture was cooled,and pyridine (8 mL) was removed in vacuo. The remaining material wasdiluted with water (50 mL) and extracted twice with EtOAc (75 mL, and 50mL). The combined organic extracts were dried over MgSO₄ andconcentrated in vacuo. The residue was purified on a 115-g SEPRA Si 35SPE column (Flow rate=35 mL/min; Eluent=EtOAc-hexanes, 1:99 for 15 min,then 1:99 to 1:9 over 40 min, 1:9 for 2 min, then 1:9 to 1:4 over 20min) to yield(6-chloro-4-trifluoromethyl-pyridin-2-yl)-(4-methoxy-benzyl)-amine as acolorless oil, which solidified upon standing. ¹H-NMR (400 MHz, CDCl₃)δ: 7.26 (d, J=8.6 Hz, 2H), 6.88 (d, J=8.6 Hz, 2H), 6.77 (s, 1H), 6.44(s, 1H), 5.21 (br. s., 1H), 4.44 (d, J=5.6 Hz, 2H), 3.80 (s, 3H). MassSpectrum (LCMS, ESI pos.): Calculated for C₁₄H₁₂N₂OClF₃: 317.1 (M+H).Measured: 317.1.

STEP B:(4-Methoxy-benzyl)-[4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amine

A solution of(6-chloro-4-trifluoromethyl-pyridin-2-yl)-(4-methoxy-benzyl)-amine (7.26g, 22.9 mmol, prepared as described in STEP A above) in DME (100 mL) andwater (50 mL) was treated with 2-trifluoromethylphenylboronic acid (5.66g, 29.8 mmol), and Cs₂CO₃ (11.2 g, 34.4 mmol). The resulting mixture wasdegassed via heating under a stream of Ar. Cl₂Pd(dppf).DCM (1.13 g, 1.38mmol) was added, and the mixture was heated to 80° C. for 4 h. Thecooled mixture was diluted with water (100 mL) and extracted twice withEtOAc (150 mL). The combined organic extracts were dried over MgSO₄ andconcentrated in vacuo. The residue was purified on a 115-g SEPRA Si 35SPE column (Flow rate=30 mL/min; Eluent=EtOAc-hexanes, 1:99 for 10 min,then 1:99 to 1:4 over 40 min) to yield(4-methoxy-benzyl)-[4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amineas a yellow oil, which solidified upon standing. ¹H-NMR (400 MHz, CDCl₃)δ: 7.76 (d, J=7.8 Hz, 1H), 7.57-7.63 (m, 1H), 7.47-7.55 (m, 2H), 7.27(d, J=8.6 Hz, 2H), 6.85-6.91 (m, 3H), 6.57 (s, 1H), 5.11 (t, J=5.2 Hz,1H), 4.48 (d, J=5.6 Hz, 2H), 3.80 (s, 3H). Mass Spectrum (LCMS, APCIpos.): Calculated for C₂₁H₁₆N₂OF₆: 427.1 (M+H). Measured: 427.2.

STEP C: 4-Trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine

A solution of(4-methoxy-benzyl)-[4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amine(1.00 g, 2.34 mmol, prepared as described in STEP B above) in MeOH (20mL) was added, the flask was flushed well with Ar, Pd/C (500 mg, 0.235mmol, 5% on carbon) was added, and the flask was flushed with Ar andfitted with an H₂ balloon. The resulting mixture stirred at roomtemperature for 4 h. The balloon was removed, the flask was flushedagain with Ar, the mixture was filtered through diatomaceous earth, andthe filter cake was washed well with MeOH. The filtrate was concentratedin vacuo to yield4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine as atan solid. ¹H-NMR (400 MHz, CDCl₃) δ: 7.81 (d, J=7.6 Hz, 1H), 7.64-7.76(m, 2H), 7.59 (d, J=7.1 Hz, 1H), 7.25 (s, 1H), 6.79 (s, 1H), 3.22 (br.s., 4H).

STEP D:3-Nitro-4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine

Sulfuric acid (10 mL) was placed in a 100 mL two-necked round-bottomedflask fitted with a magnetic stir bar and an internal thermometer andcooled to 0° C.4-Trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine (720mg, 2.35 mmol, prepared as described in STEP C above) was added portionwise so that the internal temperature did not exceed 5° C. The resultingmixture was stirred at 0° C. for 1 h. Nitric acid (106 μL, 2.35 mmol)was added slowly, keeping the internal temperature below 10° C. Themixture was stirred an additional 2 h at 0° C., poured over ice water(100 mL), treated with 6 M aqueous NaOH to pH 10, and extracted twicewith EtOAc (100 mL). The combined organic extracts were dried over MgSO₄and concentrated in vacuo. The residue was purified on a 24-g SEPRA Si50 SPE column (Flow rate=20 mL/min; Eluent=EtOAc-hexanes, 1:99 for 10min, then 1:99 to 1:3 over 40 min) to yield3-nitro-4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamineas a bright yellow solid. Mass Spectrum (LCMS, APCI pos.): Calculatedfor C₁₃H₇N₃O₂F₆: 352.0 (M+H). Measured: 352.0.

STEP E: 3-tert-Butyl-isoxazole-5-carboxylic acid[3-nitro-4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide

A solution of3-nitro-4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine(64.0 mg, 0.182 mmol, prepared as described in STEP D above) in THF (10mL) was treated with NaH (21.9 mg, 0.547 mmol, 60% dispersion in oil),and the resulting mixture was allowed to stir at room temperature for 1h. Simultaneously, a solution of 3-tert-butyl-isoxazole-5-carboxylicacid (40.1 mg, 0.237 mmol, prepared as described in Example I above) inanhydrous DCM (10 mL) was treated with oxalyl chloride (20.7 μL, 0.237mmol) and DMF (2 drops), and the resulting mixture was stirred at roomtemperature for 1 h. Volatile components were removed in vacuo, and theresidue was taken up in anhydrous THF (6 mL). The above-prepared acidchloride solution was added to the sodium anilide solution above, andthe mixture was stirred at room temperature for 1 h. The mixture wasquenched with saturated aqueous NH₄CI (20 mL) and extracted twice withEtOAc (25 mL). The residue was purified on a 12-g SEPRA Si 50 SPE column(Flow rate=15 mL/min; Eluent=EtOAc-hexanes, 1:99 for 10 min, then 1:99to 1:4 over 40 min) to yield 3-tert-butyl-isoxazole-5-carboxylic acid[3-nitro-4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amideas an off-white solid. Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₁H₁₆N₄O₄F₆: 503.1 (M+H). Measured: 503.2.

STEP F:2-(3-tert-Butyl-isoxazol-5-yl)-7-trifluoromethyl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine

A solution of 3-tert-butyl-isoxazole-5-carboxylic acid[3-nitro-4-trifluoromethyl-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide(14.6 mg, 0.029 mmol, prepared as described in STEP E above) in AcOH (3mL) was treated with iron powder (8.12 mg, 0.145 mmol), and theresulting mixture was stirred at 100° C. for 2 h and concentrated invacuo. The residue was taken up in saturated aqueous NaHCO₃ (30 mL) andextracted twice with EtOAc (25 mL). The combined organic extracts weredried over MgSO₄ and concentrated in vacuo. The residue was purified ona 4-g SEPRA Si 50 SPE column (Flow rate=10 mL/min; Eluent=EtOAc-hexanes,1:99 for 10 min, then 1:99 to 1:4 over 40 min) to yield2-(3-tert-butyl-isoxazol-5-yl)-7-trifluoromethyl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridineas a white solid. ¹H-NMR (400 MHz, CD₃OD) δ: 7.77 (d, J=7.6 Hz, 1H),7.63-7.69 (m, 1H), 7.58-7.62 (m, 2H), 7.52-7.58 (m, 1H), 7.26 (s, 1H),1.33 (s, 9H). Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₁H₁₆N₄OF₆: 455.1 (M+H). Measured: 455.1.

Following the procedures described in Example 7 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 1 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-trifluoro-methyl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine sodiumsalt ¹H-NMR (400 MHz; CD₃OD) δ: 7.81 (d, J = 7.6 Hz, 1 H), 7.64-7.70 (m,1 H), 7.53-7.64 (m, 3 H), 4.16 (s, 3 H), 1.42, (s, 9 H). Mass Spectrum(LCMS, ESI pos.) Calculated For C₂₂H₁₈ClF₆N₅: 502.1 (M + H), Measured:502.2.

Example 82-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyrazine(Compound #95)

STEP A: 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[5-bromo-3-(4-methoxy-benzylamino)-pyrazin-2-yl]-amide

To a solution of 3,5-dibromo-pyrazin-2-ylamine (252 mg, 1.00 mmol) inDME (10 mL) 60% NaH (120 mg, 3.00 mmol) was added portion wise. Theresulting mixture was stirred at room temperature for 30 min and thentreated with 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carbonylchloride (234 mg, 1.00 mmol, prepared as described in Example 1, STEPC). The resulting mixture was stirred at room temperature for 2 h andtreated with saturated NH₄Cl (20 mL) followed by EtOAc (20 mL). Theorganic layer was separated, dried (Na₂SO₄) and concentrated. Theresulting residue was dissolved in 1,4-dioxane (10 mL) and treated with4-methoxybenzylamine (0.650 mL, 5.00 mmol). The resulting mixture wasstirred at 65° C. for 2 h. The resulting mixture was allowed to cool toroom temperature and then treated with water (10 mL) and EtOAc (20 mL).The organic layer was separated, dried (Na₂SO₄) and concentrated. Theresulting residue was purified on silica (0:100-50:50 EtOAc:hexane) toyield 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[5-bromo-3-(4-methoxy-benzylamino)-pyrazin-2-yl]-amide. ¹H-NMR (400 MHz,CDCl₃) δ: 8.77 (br. s., 1H), 7.70 (s, 1H), 7.34 (d, J=8.6 Hz, 2H), 6.88(d, J=8.6 Hz, 2H), 6.28-6.36 (m, 1H), 4.59 (d, J=5.1 Hz, 2H), 4.08 (s,3H), 3.80 (s, 3H), 1.40 (s, 9H).

STEP B: 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[3-(4-methoxy-benzylamino)-5-(2-trifluoromethyl-phenyl)-pyrazin-2-yl]-amide

To a solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [5-bromo-3-(4-methoxy-benzylamino)-pyrazin-2-yl]-amide (87 mg, 0.17mmol), 2-trifluoromethyl-phenylboronic acid (36 mg, 0.19 mmol), in DMF(0.5 mL), toluene (2 mL) and water (2 mL), K₂CO₃ (33 mg, 0.23 mmol) wasadded. The resulting solution was placed under Ar and (dppf)PdCl₂.DCM(14 mg, 0.02 mmol) was added. The resulting mixture was stirred at 100°C. overnight. The organic layer was separated, dried (Na₂SO₄) andconcentrated. The residue obtained was purified on silica (20:80-100:0EtOAc: hexane) to yield5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[3-(4-methoxy-benzylamino)-5-(2-trifluoromethyl-phenyl)-pyrazin-2-yl]-amide.Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₈H₂₈ClF₃N₆O: 573.1(M+H). Measured: 573.3.

STEP C:2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyrazine

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [5-bromo-3-(4-methoxy-benzylamino)-pyrazin-2-yl]-amide (28 mg, 0.04mmol, prepared as described in the previous step) in TFA (3.5 mL) wasstirred at 65° C. for 3 h. The resulting mixture was allowed to cool toroom temperature, TFA was removed in vacuo and the resulting residue wasdissolved in EtOAc (10 mL) and washed with saturated NaHCO₃ (20 mL).EtOAc layer was separated, dried (Na₂SO₄), and concentrated in vacuo.The resulting residue was dissolved in HOAc (3.5 mL) and stirred at 100°C. overnight. The resulting mixture was allowed to cool to roomtemperature and the HOAc was removed in vacuo. The resulting residue wasdissolved in EtOAc (10 mL) and washed with saturated NaHCO₃ (10 mL).EtOAc layer was separated, dried (Na₂SO₄), and concentrated in vacuo.The resulting residue was purified on silica 0:100-50:50 EtOAc-hexane toyield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyrazine.¹H-NMR (CD₃OD) δ: 8.53-8.57 (br s, 1H), 7.82-7.86 (m, 1H), 7.68-7.74 (m,1H), 7.61-7.67 (m, 1H), 7.57-7.60 (m, 1H), 4.19 (s, 3H), 1.43 (s, 9H).Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₀H₁₈ClF₃N₆: 435.1(M+H). Measured: 435.1.

Following the procedures described in Example 8 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-fluoro- 96phenyl)-1H-imidazo[4,5-b]pyrazine ¹H-NMR (400 MHz, CD₃OD) δ: 8.94-8.97(m, 1H), 8.02-8.08 (m, 1H), 7.46-7.53 (m, 1H), 7.33-7.38 (m, 1H),7.24-7.30 (m, 1H), 4.22 (s, 3H), 1.47 (s, 9H), 1.28. Mass Spectrum(LCMS, ESI pos.): Calculated for C₁₉H₁₈ClFN₆: 385.1 (M + H); Measured:385.1.

Example 92-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-methoxy-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine(Compound #62)

STEP A: 4-Methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine

To a solution of4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine (317 mg,0.998 mmol, prepared as described in the Example 1) in MeOH (5 mL) wasadded NaOMe (1.99 mL, 0.998 mmol, 0.5 M solution in MeOH). The resultingmixture was stirred at 70° C. overnight. The reaction mixture was thendiluted with water (20 mL) and extracted with EtOAc (3×10 mL). Theorganic layers were combined, dried (MgSO₄) and concentrated. Theresulting residue was purified on silica 0:100-50:50 EtOAc-hexanes toyield 4-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine.¹H-NMR (400 MHz, CDCl₃) δ: 7.78 (d, J=7.8 Hz, 1H), 7.61-7.67 (m, 1H),7.54-7.60 (m, 1H), 7.50 (d, J=7.6 Hz, 1H), 6.46 (s, 1H), 6.27 (br. s.,2H), 3.97 (s, 3H).

STEP B:2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-methoxy-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine

Following the procedures described in the Example 1, STEPS C and D, thetitle compound was prepared from4-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine. ¹H-NMR(400 MHz, CDCl₃) δ: ¹H-NMR (CD₃OD) δ: 7.82 (d, J=7.3 Hz, 1H), 7.66-7.73(m, 1H), 7.56-7.66 (m, 2H), 6.99 (s, 1H), 4.12 (s, 3H), 4.02 (s, 3H),1.43 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₂H₂₁ClF₃N₅O: 464.1 (M+H). Measured: 464.3.

Following the procedures described in Example 9 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-methoxy- 625-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine hydrochloride¹H-NMR (CD₃OD) δ: 7.98-8.03 (m, 1H), 7.84-7.93 (m, 2H), 7.74-7.81 (m,1H), 7.51 (s, 1H), 4.32 (s, 3H), 4.10 (s, 3H), 1.46 (s, 9H). MassSpectrum (LCMS, ESI pos.) Calculated For C₂₂H₂₁ClF₃N₅O: 464.1 (M + H),Measured: 464.3.

Example 102-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethoxy-phenyl)-1H-imidazo[4,5-b]pyrazine(Compound #94)

STEP A: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid(3-amino-5-bromo-pyrazin-2-yl)-amide

To a mixture of 5-bromo-pyrazine-2,3-diamine (250 mg, 1.32 mmol) in 1:1DMF/DCM (8 mL) was added NaH (159 mg, 3.97 mmol, 60% dispersion inmineral oil) slowly. After stirring at room temperature for 1 h, theresulting mixture was cooled to 0° C. Solid5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carbonyl chloride (373 mg,1.59 mmol, prepared as described in Example 1, STEP C) was added slowly.The resulting mixture was warmed to room temperature and then stirredfor 18 h. The resulting mixture was treated with 50 mL of EtOAc andwashed with aqueous saturated NH₄Cl (20 mL), H₂O (2×10 mL) and brine (10mL). After drying with Na₂SO₄, the resulting solution was concentratedin vacuo and the residue was purified by flash chromatography on silicagel (0:100-20:80 EtOAc/hexanes) to yield5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid(3-amino-5-bromo-pyrazin-2-yl)-amide as a light brown solid. ¹H-NMR (400MHz, CDCl₃) δ: 8.88 (s, 1H), 8.12 (s, 1H), 5.34 (br. s., 2H), 4.14 (s,3H), 1.42 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₁₃H₁₆BrClN₆O: 387.0 (M+H). Measured: 387.0.

STEP B:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethoxy-phenyl)-1H-imidazo[4,5-b]pyrazine

To a mixture of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid (3-amino-5-bromo-pyrazin-2-yl)-amide (45.0 mg, 0.116 mmol, preparedas described in the previous step), 2-trifluoromethoxy-phenyl-boronicacid (28.7 mg, 0.139 mmol), Cs₂CO₃ (95 mg, 0.29 mmol) and Pd(dppf)₂.DCM(9.5 mg, 0.012 mmol) in 1,4-dioxane (3 mL) was added water (1.5 mL).After stirring at 100° C. for 16 h, the resulting mixture was cooled toroom temperature and treated with EtOAc (50 mL), washed with H₂O (20mL), brine (20 mL) and then dried with Na₂SO₄. Removal of the solventunder reduced pressure followed by flash chromatography of the residueon silica gel (0:100-35:65 EtOAc-hexanes) yielded2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethoxy-phenyl)-1H-imidazo[4,5-b]pyrazineas a light yellow solid. ¹H-NMR (400 MHz, CD₃OD) δ: 8.79 (s, 1H),7.87-7.94 (m, 1H), 7.45-7.64 (m, 3H), 4.14 (s, 3H), 1.44 (s, 9H). MassSpectrum (LCMS, ESI pos.) Calculated For C₂₀H₁₈ClF₃N₆O: 451.1 (M+H).Measured: 451.1.

Following the procedure described in Example 10, above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-chloro- 110phenyl)-1H-imidazo[4,5-b]pyrazine ¹H-NMR (400 MHz, CD₃OD) δ: 8.76 (s,1H), 7.68 (m, 1H), 7.59 (m, 1H), 7.45-7.52 (m, 2H), 4.15 (s, 3H), 1.45(s, 9H) Mass Spectrum (LCMS, ESI pos.) Calculated For C₁₉H₁₈Cl₂N₆: 401.1(M + H), Measured: 401.0

Example 112-[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethanol(Compound #57)

STEP A: 2-(4-Amino-6-chloro-3-nitro-pyridin-2-yloxy)-ethanol

To a mixture of 60% sodium hydride in mineral oil (769 mg, 19.2 mmol) inethylene glycol (10 mL) was added 2,6-dichloro-3-nitro-pyridin-4-ylamine(2.00 g, 9.62 mmol) slowly over 5 min. After stirring at roomtemperature for 16 h, the resulting mixture was treated with saturatedNH₄Cl (20 mL) and extracted with EtOAc (3×50 mL). The combined organiclayers were washed with H₂O (2×50 mL), brine (50 mL), and then driedover Na₂SO₄. The solvent was removed in vacuo and the resulting residuewas triturated with hexanes.2-(4-Amino-6-chloro-3-nitro-pyridin-2-yloxy)-ethanol was obtained as alight yellow solid (by filtration) and washed with hexanes. ¹H-NMR (400MHz, CD₃OD) δ: 6.50 (s, 1H), 4.37-4.50 (m, 2H), 3.80-3.93 (m, 2H). MassSpectrum (LCMS, ESI pos.) Calculated For C₇H₈ClN₃O₄: 234.0 (M+H).Measured: 234.0.

STEP B:2-[2-(tert-Butyl-dimethyl-silanyloxy)-ethoxy]-6-chloro-3-nitro-pyridin-4-ylamine

To a mixture of 2-(4-amino-6-chloro-3-nitro-pyridin-2-yloxy)-ethanol(4.40 g, 18.8 mmol, prepared as described in the previous step) andtert-butyl-chloro-dimethyl-silane (3.12 g, 20.7 mmol) in DCM (50 mL) wasadded imidazole (1.80 g, 26.4 mmol). After stirring at room temperaturefor 2 h, the resulting mixture was treated with saturated NH₄Cl (50 mL)and extracted with EtOAc (3×50 mL). The combined organic layers werewashed with H₂O (3×50 mL), brine (50 mL), and dried over Na₂SO₄. Thesolvent was removed in vacuo and the residue was purified by flashchromatography on silica gel (0:100-20:80 EtOAc/hexane) to yield2-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-6-chloro-3-nitro-pyridin-4-ylamineas a light yellow solid. ¹H-NMR (400 MHz, CDCl₃) δ: 6.35 (s, 1H), 6.17(br. s., 2H), 4.49 (t, J=5.1 Hz, 2H), 3.96 (t, J=5.1 Hz, 2H), 0.88 (s,9H), 0.08 (s, 6H).

STEP C:2-[2-(tert-Butyl-dimethyl-silanyloxy)-ethoxy]-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine

To a mixture of2-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-6-chloro-3-nitro-pyridin-4-ylamine(1.20 g, 3.45 mmol, prepared as described in the previous step),2-trifluoromethyl-phenyl-boronic acid (786 mg, 4.14 mmol), Cs₂CO₃ (2.81g, 8.62 mmol) and Pd(dppf)₂.DCM (282 mg, 0.345 mmol) in 1,4-dioxane (12mL) was added water (5 mL). The resulting mixture was stirred at 110° C.under microwave irradiation for 2 h and then cooled to room temperature.The resulting mixture was treated with of EtOAc (50 mL), then washedwith H₂O and brine and was dried (Na₂SO₄). Removal of the solvent underreduced pressure followed by flash chromatography of the residue onsilica gel (5:95-40:60 EtOAc-hexanes) yielded2-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamineas a light brown solid. ¹H-NMR (400 MHz, CDCl₃) δ: 7.76 (d, J=7.8 Hz,1H), 7.51-7.65 (m, 2H), 7.46 (d, J=7.3 Hz, 1H), 6.41 (s, 1H), 6.08 (br.s., 2H), 4.50 (t, J=5.3 Hz, 2H), 3.95 (t, J=5.3 Hz, 2H), 0.89 (s, 9H),0.07 (s, 6H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₀H₂₆F₃N₃O₄Si: 458.1 (M+H). Measured: 458.0.

STEP D: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[2-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide

To a mixture of 60% sodium hydride in mineral oil (120 mg, 3.00 mmol) inTHF (10 mL) at 0° C. was added2-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine(458 mg, 1.00 mmol, prepared as described in the previous step) slowly.The resulting mixture was warmed to room temperature and then stirredfor 1 h under Ar. 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carbonylchloride (259 mg, 1.10 mmol, prepared as described in Example 1, STEP C)was added and the resulting mixture was stirred for 3 h under Ar. Afterquenching with saturated aqueous NH₄CI solution (5 mL), the mixture wastreated with EtOAc (100 mL) and washed with H₂O, brine and dried withNa₂SO₄. Removal of the solvent under reduced pressure followed by flashchromatography of the residue on silica gel (0:100-10:90 EtOAc/hexanes)yielded 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[2-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amideas a white solid. ¹H-NMR (400 MHz, CD₃OD) δ: 10.10 (s, 1H), 8.33 (s,1H), 7.81 (d, J=7.6 Hz, 1H), 7.62-7.70 (m, 1H), 7.52-7.62 (m, 2H),4.51-4.61 (m, 2H), 4.11 (s, 3H), 3.94-4.01 (m, 2H), 1.42 (s, 9H), 0.89(s, 9H), 0.07 (s, 6H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₉H₃₇ClF₃N₅O₅Si: 656.2 (M+H). Measured: 656.2.

STEP E:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine

A mixture of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid[2-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide(428 mg, 0.650 mmol, prepared as described in the previous step) andiron powder (291 mg, 5.22 mmol) in 1:1 AcOH/EtOH (7 mL) was stirred at100° C. under Ar for 1 h. After cooling to room temperature, the mixturewas treated with EtOAc (20 mL) and filtered through diatomaceous earth.The filtrate was concentrated in vacuo and the residue was purified byflash chromatography on silica gel (0:100-10:90 EtOAc/hexanes) to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridineas a white solid. ¹H-NMR (400 MHz, CD₃OD) δ: 7.81 (d, 1H), 7.65-7.71 (m,1H), 7.55-7.62 (m, 2H), 7.31 (s, 1H), 4.64 (t, J=4.9 Hz, 2H), 4.02-4.10(m, 5H), 1.44 (s, 9H), 0.86 (s, 9H), 0.06 (s, 6H). Mass Spectrum (LCMS,ESI pos.) Calculated For C₂₉H₃₇ClF₃N₅O₂Si: 608.2 (M+H). Measured: 608.3.

STEP F:2-[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethanol

A mixture of2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine(390 mg, 0.641 mmol, prepared as described in the previous step) andtetrabutylammonium fluoride hydrate (914 mg, 3.21 mmol) in THF (10 mL)was stirred at 50° C. for 18 h. After cooling to room temperature, theresulting mixture was treated with EtOAc (50 mL) and washed with H₂O(2×20 mL), brine (20 mL). The organic layer was dried with Na₂SO₄ andconcentrated in vacuo. The residue was purified by flash chromatographyon silica gel (40:60-60:40 EtOAc/heptane) to yield2-[2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethanolas a white solid. ¹H-NMR (400 MHz, CD₃OD) δ: 7.67 (dd, J=7.3, 2.0 Hz,1H), 7.48-7.56 (m, 2H), 7.39 (td, J=6.7, 1.8 Hz, 2H), 4.64-4.68 (m, 2H),4.05 (s, 3H), 3.97-4.02 (m, 2H), 1.42-1.49 (m, 9H). Mass Spectrum (LCMS,ESI pos.) Calculated For C₂₃H₂₃ClF₃N₅O₂: 492.2 (M+H). Measured: 492.4.

Following the procedure described in Example 11, above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 2-[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2- 58chloro-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethanol ¹H-NMR (400MHz, CD₃OD) δ: 7.67 (dd, J = 7.3, 2.0 Hz, 1H), 7.48-7.56 (m, 2H),7.32-7.45 (m, 2H), 4.64-4.68 (m, 2H), 4.05 (s, 3H), 3.97-4.02 (m, 2H),1.44 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₂H₂₃Cl₂N₅O₂: 460.1 (M + H), Measured: 460.2. Cmpd3-tert-Butyl-5-[6-(2-chloro-phenyl)-4-(2-hydroxy-ethoxy)-3H- 83imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrile ¹H-NMR(400 MHz, CD₃OD) δ: 7.64-7.71 (m, 1H), 7.49-7.56 (m, 2H), 7.34-7.44 (m,2H), 4.64-4.71 (m, 2H), 4.11 (s, 3H), 3.97-4.04 (m, 2H), 1.47 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₃H₂₃ClN₆O₂: 451.2 (M +H), Measured: 451.1. Cmpd3-tert-Butyl-5-[4-(2-hydroxy-ethoxy)-6-(2-trifluoromethyl- 84phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrile ¹H-NMR (400 MHz, CDCl₃) δ: 7.82 (d, J = 7.3 Hz, 1H),7.66-7.74 (m, 1H), 7.56-7.66 (m, 2H), 7.35 (s, 1H), 4.60-4.67 (m, 2H),4.12 (s, 3H), 3.94-4.01 (m, 2H), 1.48 (s, 9H). Mass Spectrum (LCMS, ESIpos.) Calculated For C₂₄H₂₃F₃N₆O₂: 485.2 (M + H), Measured: 485.2.

Example 12[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-aceticacid (Compound #88)

STEP A:[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-acetaldehyde

To a suspension of2-[2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethanol(230 mg, 0.466 mmol, prepared as described in Example 11, STEP F) in DCM(10 mL) at 0° C. was added Dess-Martin periodinane (395 mg, 0.931 mmol).The resulting mixture was warmed to room temperature and stirred for 2h. The reaction was then quenched by adding aqueous 10% Na₂S₂O₃ solution(20 mL). The resulting mixture was treated with EtOAc (50 mL) and washedwith saturated NaHCO₃ solution (20 mL), H₂O (20 mL) and brine (20 mL).After drying with Na₂SO₄, the resulting solution was concentrated invacuo and the residue was purified by flash chromatography on silica gel(20:80-50:50 EtOAc/hexanes) to yield[2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-acetaldehydeas a yellow solid. ¹H-NMR (400 MHz, CDCl₃) δ: 7.67 (dd, J=7.5, 1.9 Hz,1H), 7.49-7.54 (m, 2H), 7.35-7.44 (m, J=7.3, 7.3, 7.3, 7.3, 1.6 Hz, 2H),5.07 (t, J=4.9 Hz, 1H), 4.52 (dd, J=4.8, 1.5 Hz, 2H), 4.04 (s, 3H), 1.45(s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₃H₂₁F₃N₅O₂:492.1 (M+H). Measured: 492.1.

STEP B:[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-aceticacid

To a mixture of[2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-acetaldehyde(30.0 mg, 0.0610 mmol, prepared as described in the previous step) in5:5:2 tart-BuOH/2-methyl-2-butene/H₂O (1.2 mL) was added sodium chlorite(11.6 mg, 0.128 mmol) followed by sodium dihydrogen phosphate (17.8 mg,0.183 mmol). After stirring at room temperature for 16 h, the resultingmixture was treated with 1N NaOH (2 mL) and concentrated in vacuo. Theresulting residue was treated with H₂O (20 mL) and washed with EtOAc(2×10 mL). The aqueous phase was acidified to pH 5 by adding HOAc andthen extracted with EtOAc (3×15 mL). The combined organic layers werewashed with H₂O (15 mL), brine (15 mL) and then dried with Na₂SO₄.Removal of the solvent in vacuo yielded[2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-aceticacid as a light yellow solid. ¹H-NMR (400 MHz, CD₃OD) δ: 7.13-8.04 (m,5H), 5.10 (s, 2H), 4.06 (s, 3H), 1.43 (s, 9H). Mass Spectrum (LCMS, ESIpos.) Calculated For C₂₃H₂₁ClF₃N₅O₃: 508.1 (M+H). Measured: 508.1.

Following the procedure described in Example 12 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd [2-(5-tert-Butyl-4-cyano-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro- 85phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-acetic acid ¹H-NMR (400 MHz,CD₃OD) δ: 7.61-7.66 (m, 1H), 7.58 (s, 1H), 7.45-7.50 (m, 1H), 7.30-7.38(m, 2H), 5.12 (s, 2H), 4.11 (s, 3H), 2.76-2.96 (m, 4H), 1.45 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₃H₂₁ClN₆O₃: 465.1 (M +H), Measured: 465.1. Cmpd[2-(5-tert-Butyl-4-cyano-2-methyl-2H-pyrazol-3-yl)-6-(2- 86trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]- acetic acid¹H-NMR (400 MHz, CDCl₃) δ: 7.78-7.83 (m, 1H), 7.64-7.71 (m, 1H),7.55-7.62 (m, 2H), 7.40 (s, 1H), 5.13 (s, 2H), 4.13 (s, 3H), 2.75-2.96(m, 4H), 1.48 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₄H₂₁F₃N₆O₃: 499.2 (M + H), Measured: 499.1. Cmpd[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro- 87phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-acetic acid ¹H-NMR (400 MHz,CD₃OD) δ: 7.11-8.06 (m, 5H), 5.10 (s, 2H), 4.06 (s, 3H), 1.46 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₂H₂₁Cl₂N₅O₃: 474.1 (M +H), Measured: 474.1.

Example 13{2-[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethyl}-dimethyl-amine(Compound #53)

To a mixture of[2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-acetaldehyde(40.0 mg, 0.0813 mmol, prepared as described in Example 12, STEP A) in30:1 MeOH/AcOH (2 mL) was added 2.0 M dimethyl amine in THF (81.3 μL,0.163 mmol) followed by sodium cyanoborohydride (10.2 mg, 0.163 mmol).After stirring at room temperature for 18 h, the resulting mixture wastreated with EtOAc (50 mL) and washed with saturated aqueous NH₄Cl (20mL), H₂O (20 mL) and brine (20 mL). The organic layer was dried withNa₂SO₄ and concentrated in vacuo. The resulting residue was purified byflash chromatography on silica gel (0:100-10:90 MeOH/DCM) to yield{2-[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethyl}-dimethyl-amineas a light yellow solid. ¹H-NMR (400 MHz, CD₃OD) δ: 7.84 (d, J=7.6 Hz,1H), 7.67-7.75 (m, 1H), 7.58-7.66 (m, 2H), 7.37-7.43 (m, 1H), 4.80-4.86(m, 2H), 4.03 (s, 3H), 3.47-3.55 (m, 2H), 2.88 (s, 6H), 1.45 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₅H₂₈ClF₃N₆O: 521.2(M+H). Measured: 521.2.

Following the procedure described in Example 13 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 49 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-morpholin-4-yl-ethoxy)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine¹H-NMR (400 MHz, CD₃OD) δ:: 7.79-7.84 (m, 1H), 7.66-7.72 (m, 1H),7.57-7.63 (m, 2H), 7.34 (s, 1H), 4.75 (t, J = 5.6 Hz, 2H), 4.04 (s, 3H),3.67-3.75 (m, 4H), 2.98 (t, J = 5.7 Hz, 2H), 2.60-2.76 (m, 4H),1.43-1.46 (m, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₇H₃₀ClF₃N₆O₂: 563.2 (M + H), Measured: 563.2. Cmpd 502-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-[2-(4-methyl-piperazin-1-yl)-ethoxy]-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine¹H-NMR (400 MHz, CD₃OD) δ: 7.80-7.85 (m, 1H), 7.67-7.74 (m, 1H),7.57-7.64 (m, 2H), 7.34 (s, 1H), 4.75 (t, J = 5.5 Hz, 2H), 4.04 (s, 3H),3.03 (t, J = 5.5 Hz, 2H), 2.86 (br. s., 8H), 2.61 (s, 3H), 1.45 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₈H₃₃ClF₃N₇O: 576.2 (M +H), Measured: 576.2. Cmpd 512-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-(2-pyrrolidin-1-yl-ethoxy)-3H-imidazo[4,5-c]pyridine ¹H-NMR(400 MHz, CD₃OD) δ: 7.66-7.71 (m, 1H), 7.56 (s, 1H), 7.51-7.55 (m, 1H),7.37-7.47 (m, 2H), 4.87-4.91 (m, 2H), 4.04 (s, 3H), 3.70-3.75 (m, 2H),3.42-3.50 (m, 4H), 2.03-2.11 (m, 4H), 1.45 (s, 9H). Mass Spectrum (LCMS,ESI pos.) Calculated For C₂₆H₃₀Cl₂N₆O: 513.2 (M + H), Measured: 513.3.Cmpd 522-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-pyrrolidin-1-yl-ethoxy)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine¹H-NMR (400 MHz, CD₃OD) δ: 7.84 (d, J = 7.6 Hz, 1H), 7.69-7.75 (m, 1H),7.59-7.67 (m, 2H), 7.41 (s, 1H), 4.83-4.87 (m, 2H), 4.04 (s, 3H),3.68-3.74 (m, 2H), 3.47 (br. s., 4H), 2.06-2.12 (m, 4H), 1.45 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₇H₃₀ClF₃N₆O: 547.2 (M +H), Measured: 547.3. Cmpd 542-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-(2-morpholin-4-yl-ethoxy)-3H-imidazo[4,5-c]pyridine ¹H-NMR(400 MHz, CD₃OD) δ: 7.61-7.69 (m, 1H), 7.46-7.55 (m, 2H), 7.32-7.45 (m,2H), 4.74-4.83 (m, 2H), 4.04 (s, 3H), 3.71 (br. s., 4H), 3.05 (br. s.,2H), 2.75 (br. s., 4H), 1.44 (br. s., 9H). Mass Spectrum (LCMS, ESIpos.) Calculated For C₂₆H₃₀Cl₂N₆O₂: 529.2 (M + H), Measured: 529.3. Cmpd55 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-[2-(4-methyl-piperazin-1-yl)-ethoxy]-3H-imidazo[4,5-c]pyridine¹H-NMR (400 MHz, CD₃OD) δ: 7.64-7.69 (m, 1H), 7.50-7.55 (m, 1H), 7.50(s, 1H), 7.35-7.45 (m, 2H), 4.78 (t, J = 5.6 Hz, 2H), 4.04 (s, 3H), 3.04(t, J = 5.6 Hz, 2H), 2.83 (br. s., 8H), 2.52 (s, 3H), 1.44 (s, 9H). MassSpectrum (LCMS, ESI pos.) Calculated For C₂₇H₃₃Cl₂N₇O: 542.2 (M + H),Measured: 542.2. Cmpd 56{2-[2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethyl}-dimethyl-amine¹H-NMR (400 MHz, CD₃OD) δ: 7.68 (dd, J = 7.2, 2.1 Hz, 1H), 7.55 (s, 1H),7.51-7.54 (m, 1H), 7.36-7.45 (m, 2H), 4.82-4.88 (m, 2H), 4.04 (s, 3H),3.44 (t, J = 5.3 Hz, 2H), 2.81 (s, 6H), 1.42-1.48 (m, 9H). Mass Spectrum(LCMS, ESI pos.) Calculated For C₂₄H₂₈Cl₂N₆O: 487.2 (M + H), Measured:487.1.

Example 142-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2,6-dichloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinesodium salt (Compound #103)

STEP A: 6-(2,6-Dichlorophenyl)-4-hydroxy-1H-pyridin-2-one

NaH (400 mg, 10.0 mmol, 60% mineral oil dispersion) was placed in a 100mL round bottom flask equipped with a stir bar and then evacuated andbackflushed with Ar. Dry THF (30 mL) was added via syringe and methylacetoacetate (1.08 mL, 10.0 mmol) was added dropwise via syringe to thestirred mixture. Once the solution was homogeneous, the mixture wascooled to −78° C. and n-BuLi (4.20 mL of a 2.5 M solution in hexanes,10.5 mmol) was added dropwise via syringe at a rate that maintained theinternal temperature below −70° C. The resulting mixture was stirred at−78° C. for 30 min and 2,6-dichlorobenzonitrile (1.72 g, 10.0 mmol) wasadded as a solid in one portion. The resulting solution was stirred at−78° C. allowing the reaction to warm to room temperature slowlyovernight (˜16 h).

The resulting mixture was then cooled in an ice bath and concentratedHCl was added dropwise at a rate that maintained the internaltemperature below 5° C. to give a pH ˜4. The resulting mixture wasdiluted with H₂O (20 mL) and extracted with EtOAc (3×20 mL). Thecombined extracts were dried over MgSO4 and filtered. The solvent wasremoved under reduced pressure.

Toluene was added to the residue and the resulting mixture was refluxedfor 24 h. The resulting mixture was then cooled to room temperature andthe solid was isolated by filtration. The solid was washed with toluene(20 mL) and the residual solvent was removed under reduced pressure toyield 6-(2,6-dichlorophenyl)-4-hydroxy-1H-pyridin-2-one. ¹H NMR (400MHz, CD₃OD) δ: 7.50-7.56 (m, 2H), 7.43-7.49 (m, 1H), 5.99 (d, J=2.2 Hz,1H), 5.84 (d, J=2.2 Hz, 1H).

STEP B: 6-(2,6-Dichloro-phenyl)-4-hydroxy-3-nitro-1H-pyridin-2-one

6-(2,6-Dichlorophenyl)-4-hydroxy-1H-pyridin-2-one (253 mg, 0.990 mmol,prepared as described in the previous step) was placed in a 8 mL vialequipped with a stir bar and AcOH (4 mL) was added. Concentrated HNO₃(0.540 mL, 12.0 mmol) was added via syringe and the vial was capped andstirred at 60° C. for 14 hr. The resulting mixture was cooled to roomtemperature and poured onto crushed ice (20 mL). The precipitate wasisolated by filtration and washed with H₂O (10 mL). The solid wasair-dried to yield6-(2,6-Dichloro-phenyl)-4-hydroxy-3-nitro-1H-pyridin-2-one as a yellowpowder. The filtrate was extracted with EtOAc (3×10 mL) and the combinedextracts were washed with H₂O (20 mL), dried over MgSO₄ and filtered.The solvent was removed under reduced pressure to yield an additionalcrop of 6-(2,6-dichloro-phenyl)-4-hydroxy-3-nitro-1H-pyridin-2-one.¹H-NMR (400 MHz, CD₃OD) δ: 7.48-7.61 (m, 3H), 6.13 (s, 1H).

STEP C: 2,4-Dichloro-6-(2,6-dichloro-phenyl)-3-nitro-pyridine

6-(2,6-Dichloro-phenyl)-4-hydroxy-3-nitro-1H-pyridin-2-one (208 mg,0.689 mmol, prepared as described in the previous step) was placed in a8 mL vial equipped with a stir bar and POCl₃ (4 mL) was added. Theresulting mixture was stirred at 100° C. for 24 h, cooled to roomtemperature, and poured onto crushed ice. The solid was isolated byfiltration, dissolved in DCM (20 mL), dried over MgSO₄, and filtered.The solvent was removed under reduced pressure and the resulting residuewas chromatographed on a 24-g SiO₂ pre-packed column eluting with0:1-1:0 EtOAc/heptane to yield2,4-dichloro-6-(2,6-dichloro-phenyl)-3-nitro-pyridine. ¹H-NMR (400 MHz,CDCl₃) δ: 7.51 (s, 1H), 7.41-7.48 (m, 2H), 7.33-7.41 (m, 1H).

STEP D: 2-Chloro-6-(2,6-dichlorophenyl)-3-nitropyridin-4-ylamine

2,4-Dichloro-6-(2,6-dichloro-phenyl)-3-nitro-pyridine (94.4 mg, 0.279mmol, prepared as described in the previous step) was placed in a 8 mLvial equipped with a stir bar and dry MeOH (2 mL) was added via syringe.The resulting solution was gently heated with a heat gun to dissolve thesolid and 7M NH₃ in MeOH (2.00 mL, 14.0 mmol) was added via syringe. Theresulting mixture was stirred at room temperature for 16 h and thesolvent was removed under reduced pressure. The resulting residue waspurified by preparative thin layer chromatography (TLC) on a 2000μ SiO₂plate developed with 1:4 EtOAc/heptane to yield2-chloro-6-(2,6-dichlorophenyl)-3-nitropyridin-4-ylamine. ¹H-NMR (400MHz, CDCl₃) δ: 7.33-7.45 (m, 2H), 7.27-7.33 (m, 1H), 6.68 (s, 1H), 5.86(br. s., 2H). LCMS (ESI): Calculated for C₁₁H₆ClN₃O₂: 318.0 (M+H).Measured: 318.0.

STEP E: 6-(2,6-Dichlorophenyl)-2-methoxy-3-nitropyridin-4-ylamine

2-Chloro-6-(2,6-dichlorophenyl)-3-nitropyridin-4-ylamine (28.7 mg,0.0901 mmol, prepared as described in the previous step) was placed in a8 mL vial equipped with a stir bar and anhydrous MeOH (1 mL) was addedvia syringe. NaOMe (0.5 M in MeOH, (0.396 mL, 0.198 mmol) was added tothe stirred mixture, which was then stirred at 65° C. for 4 h. Thesolvent was removed under reduced pressure and the residue waschromatographed on a 12-g SiO₂ pre-packed column eluting with 0:1-2:3EtOAc/heptane to yield6-(2,6-dichlorophenyl)-2-methoxy-3-nitropyridin-4-ylamine. ¹H-NMR (400MHz, CDCl₃) δ: 7.37-7.41 (m, 2H), 7.25-7.30 (m, 1H), 6.35 (s, 1H), 6.15(br. s., 2H), 4.01 (s, 3H).

STEP F:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2,6-dichloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine

Following the procedure described in Example 25, STEP C,2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2,6-dichloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinewas prepared from6-(2,6-dichlorophenyl)-2-methoxy-3-nitropyridin-4-ylamine (24.2 mg,0.0770 mmol, prepared as described in the previous step) and5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carbonyl chloride (18.1 mg,0.0770 mmol, prepared as described in Example 1, STEP C). ¹H-NMR (400MHz, CD₃OD) δ: 7.47-7.53 (m, J=8.3 Hz, 2H), 7.39 (dd, J=8.8, 7.3 Hz,1H), 7.21 (s, 1H), 4.12 (s, 3H), 4.04 (s, 3H), 1.45 (s, 9H). MassSpectrum (LCMS, ESI pos.): Calculated for C₂₁H₂₀Cl₃N₅O: 464.1 (M+H).Measured: 464.0.

STEP G:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2,6-dichloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinesodium salt

Following the procedure described in Example 1, STEP F, the2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2,6-dichloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinesodium salt was prepared from2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2,6-dichlorophenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine(11.6 mg, 0.0250 mmol, prepared as described in the previous step) and0.5 M NaOMe in MeOH (50.0 μL, 0.0.0250 mmol) as a white foam. ¹H-NMR(400 MHz, d₆-DMSO) δ: 7.51-7.55 (m, 2H), 7.39 (dd, J=8.7, 7.5 Hz, 1H),7.00 (s, 1H), 4.02 (s, 3H), 3.89 (s, 3H), 1.39 (s, 9H). Mass Spectrum(LCMS, ESI pos.): Calculated for C₂₁H₂₀Cl₃N₅O: 464.1 (M+H). Measured:464.0.

Example 152-(5-tert-Butyl-4-methoxy-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt (Compound #79); and2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt (Compound #80)

STEP A:2-(5-tert-butyl-4-methoxy-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridineand2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine

5-tert-Butyl-4-methoxy-2-methyl-2H-pyrazole-3-carboxylic acid (49.7 mg,0.234 mmol, prepared as described in Example E) was dissolved in DCM (2mL) and DMF (10 μL) was added. Oxalyl chloride (30.6 μL, 0.351 mmol) wasadded via syringe and the resulting mixture was stirred at roomtemperature for 1 h. The solvent was removed under reduced pressure andthe residue was dissolved in anhydrous THF (3 mL).

A solution of2-methoxy-3-nitro-6-(2-trifluoromethyl-phenyl)-4-pyridin-4-ylamine (73.3mg, 0.234 mmol, prepared as described in Example 5, STEP B) in anhydrousTHF (3 mL) under Ar was cooled to 0° C. in an ice bath and treated withNaH (28.1 mg of 60% mineral oil dispersion, 0.702 mmol). The THFsolution of the acid chloride (prepared as described above) was thenadded dropwise to the stirred mixture. The resulting mixture was thenstirred at 0° C. for 1 h and then poured onto ice (20 mL) and extractedwith EtOAc (3×20 mL). The combined extracts were dried over MgSO₄,filtered, and the solvent was removed under reduced pressure.

The resulting residue was dissolved in glacial AcOH (2 mL) and Fe powder(65.3 mg, 1.17 mmol) was added. The resulting mixture was stirred at100° C. for 1 h and the cooled mixture was poured into ice (20 mL). Theresulting aqueous solution was extracted with EtOAc (3×20 mL) and thecombined extracts were washed with 1 M LiOH (20 mL) and brine (20 mL).The organic layer was dried over MgSO₄ and filtered. The solvent wasremoved under reduced pressure and the resulting residue waschromatographed on a 24-g SiO₂ pre-packed column eluting with 0:1-4:1EtOAc/hexanes to yield2-(5-tert-butyl-4-methoxy-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoro-methyl-phenyl)-3H-imidazo[4,5-c]pyridine.¹H-NMR (400 MHz, CD₃OD) δ: 7.81 (d, J=7.8 Hz, 1H), 7.65-7.72 (m, 1H),7.55-7.63 (m, 2H), 7.31 (s, 1H), 4.12 (s, 3H), 4.03 (s, 3H), 3.62 (s,3H), 1.39 (s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₃H₂₄F₃N₅O₂: 460.2 (M+H). Measured: 460.2.

Also isolated was2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine.¹H-NMR (400 MHz, CD₃OD) δ: 7.81 (d, J=7.8 Hz, 1H), 7.69 (t, J=7.5 Hz,1H), 7.54-7.64 (m, 2H), 7.26 (br. s., 1H), 6.79 (br. s., 1H), 4.26 (s,3H), 4.12 (s, 3H), 1.36 (s, 9H). Mass Spectrum (LCMS, ESI pos.):Calculated for C₂₂H₂₂F₃N₅O: 430.2 (M+H). Measured: 430.2.

STEP B:2-(5-tert-Butyl-4-methoxy-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoro-methyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt

2-(5-tert-butyl-4-methoxy-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoro-methyl-phenyl)-3H-imidazo[4,5-c]pyridine(54.4 mg, 0.118 mmol, prepared in Step A above) was dissolved in EtOAc(1 mL) and 0.5 M MsOH in EtOAc (237 μL, 0.118 mmol) was added. Theresulting solution was thoroughly mixed and the solvent was removedunder reduced pressure to yield2-(5-tert-Butyl-4-methoxy-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoro-methyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt. ¹H-NMR (400 MHz, DMSO-d₆) δ: 7.82-7.90 (m,1H), 7.72-7.80 (m, 1H), 7.61-7.69 (m, 2H), 7.32 (s, 1H), 4.02 (s, 3H),4.01 (s, 3H), 3.61 (s, 3H), 2.34 (s, 3H), 1.35 (s, 9H). Mass Spectrum(LCMS, ESI pos.): Calculated for C₂₃H₂₄F₃N₅O₂: 460.2 (M+H). Measured:460.2.

STEP C:2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt

2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine(9.2 mg, 0.021 mmol, prepared as in STEP A) was dissolved in EtOAc (1mL) and 0.5 M MsOH in EtOAc (41 μL, 0.021 mmol) was added. The resultingsolution was thoroughly mixed and the solvent was removed under reducedpressure to yield2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt. ¹H-NMR (400 MHz, acetone-d₆) δ: 7.88 (d,J=8.1 Hz, 1H), 7.74-7.80 (m, 1H), 7.66-7.73 (m, 2H), 7.62 (s, 1H), 7.17(s, 1H), 4.36 (s, 3H), 4.33 (s, 3H), 2.80 (s, 3H), 1.33 (s, 9H). MassSpectrum (LCMS, ESI pos.): Calculated for C₂₂H₂₂F₃N₅O: 430.2 (M+H).Measured: 430.2.

Example 163-tert-Butyl-5-[4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrileHydrochloride (Compound #75)

STEP A: 5-Nitro-2-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine

2-Bromo-5-nitropyridin-4-amine (561 mg, 2.57 mmol), Cs₂CO₃ (2.52 g, 7.72mmol), (dppf)PdCl₂.DCM (113 mg, 0.154 mmol), and2-(trifluoromethyl)phenylboronic acid (636 mg, 3.35 mmol) were combinedand flushed with Ar and anhydrous DME (24 mL) was added. H₂O (8 mL) wasadded via syringe and the resulting mixture was stirred at 85° C. for 18h. The resulting mixture was cooled to room temperature and diluted withEtOAc (30 mL) and the resulting solution was washed with brine (30 mL).The aqueous phase was extracted with EtOAc (3×25 mL) and the combinedextracts were dried over MgSO₄ and filtered. The solvent was removedunder reduced pressure and the residue was chromatographed on a 40-gSiO₂ pre-packed column eluting with 0:1-2:3 EtOAc/hexanes to yield5-nitro-2-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine. ¹H-NMR (400 MHz,CDCl₃) δ: 9.17 (s, 1H), 7.70 (d, J=7.8 Hz, 1H), 7.56 (t, J=7.1 Hz, 1H),7.49 (t, J=7.5 Hz, 1H), 7.40 (d, J=7.6 Hz, 1H), 7.00 (br. s., 2H), 6.71(s, 1H). Mass Spectrum (LCMS, ESI pos.): Calculated for C₁₂H₈F₃N₃O₂:284.1 (M+H). Measured: 284.1.

STEP B: 2-Chloro-6-(2-trifluoromethyl-phenyl)-pyridine-3,4-diamine

5-Nitro-2-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine (749 mg, 2.65mmol, prepared as in the previous step) was dissolved in concentratedHCl (12 mL) and heated to 90° C. SnCl₂.2H₂O (2.98 g, 13.2 mmol) wasadded to the stirred mixture in small portions and resulting mixture wasstirred at 90° C. for 1 h. After completion of addition, the resultingmixture was cooled to 0° C. in an ice bath, treated with 6 M aqueousNaOH (30 mL) and then extracted with DCM (3×40 mL). The combinedextracts were dried over MgSO₄ and filtered. The solvent was removedunder reduced pressure and the residue was chromatographed on a 40-gSiO₂ pre-packed column eluting with 0:1-3:2 EtOAc/hexanes to yield2-chloro-6-(2-trifluoromethyl-phenyl)-pyridine-3,4-diamine. ¹H-NMR (400MHz, CDCl₃) δ: 7.67 (d, J=7.8 Hz, 1H), 7.47-7.55 (m, 1H), 7.37-7.46 (m,2H), 6.57 (s, 1H), 4.09 (br s., 2H), 3.74 (br. s., 2H).

STEP C:3-tert-Butyl-5-[4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrile

3-tert-butyl-4-cyanopyrazole-5-carboxylic acid (92.6 mg, 0.447 mmol,prepared as in Example C) was dissolved in DCM (2 mL) and DMF (10 μL)and oxalyl chloride (53.1 μL, 0.609 mmol) were added. The resultingmixture was stirred at room temperature for 1 h and the solvent wasremoved under reduced pressure. The residue was dissolved in DCM (2 mL).

2-Chloro-6-(2-trifluoromethyl-phenyl)-pyridine-3,4-diamine (117 mg,0.406 mmol, prepared as in STEP B above) was dissolved in DCM (3 mL) andDIEA (141 μL, 0.812 mmol) was added. The acid chloride solution wasadded dropwise to the stirred mixture, which was then stirred at roomtemperature for an additional 18 h. The solvent was removed underreduced pressure and the residue was dissolved in POCl₃ (1.5 mL). Theresulting solution was stirred for 16 h at 100° C. and then cooled toroom temperature and poured onto ice (˜20 mL). After the POCl₃ had beenconsumed, the resulting precipitate was isolated by filtration andwashed with H₂O (2×20 mL). The solid was dissolved in DCM (25 mL) andthe solution was dried over MgSO₄ and filtered. The solvent was removedunder reduced pressure and the crude product was chromatographed on a40-g SiO₂ pre-packed column eluting with 0:1-2:3 EtOAc/hexanes to yield3-tert-Butyl-5-[4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrile.¹H-NMR (400 MHz, CD₃OD) δ: 7.85 (d, J=7.8 Hz, 1H), 7.68-7.76 (m, 2H),7.62-7.68 (m, 1H), 7.60 (d, J=7.6 Hz, 1H), 4.19 (s, 3H), 1.48 (s, 9H).Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₂H₁₈ClF₃N₆: 459.1(M+H). Measured: 459.2.

STEP D:3-tert-Butyl-5-[4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrilehydrochloride

A solution of3-tert-Butyl-5-[4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrile(111 mg, 0.241 mmol, prepared as in the previous step) in EtOAc (1 mL)was treated with 1 M HCl in Et₂O solution (0.241 mL, 0.241 mmol). Theresulting mixture was thoroughly mixed and the solvent was removed underreduced pressure to yield3-tert-butyl-5-[4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrilehydrochloride. ¹H-NMR (400 MHz, DMSO-d₆) δ: 7.90 (d, J=7.6 Hz, 1H), 7.84(s, 1H), 7.80 (t, J=7.3 Hz, 1H), 7.71 (t, J=7.6 Hz, 1H), 7.66 (d, J=7.6Hz, 1H), 4.11 (s, 3H), 1.44 (s, 9H). Mass Spectrum (LCMS, ESI pos.):Calculated for C₂₂H₁₈ClF₃N₆: 459.1 (M+H). Measured: 459.2.

Following the procedure described in Example 16, above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 3′-{4-Chloro-6-[2-(trifluoromethyl)phenyl]-1H-imidazo[4,5-c]- 72pyridin-2-yl}-2′-methyl-4′,5′-dihydro-2′H-spiro[cyclo-hexane-1,6′-cyclopenta[c]pyrazole] hydrochloride ¹H-NMR (400 MHz,d₆-DMSO) δ: 7.89 (d, J = 7.8 Hz, 1H), 7.76-7.83 (m, 1H), 7.66-7.73 (m,2H), 7.64 (d, J = 7.6 Hz, 1H), 4.23 (s, 3H), 2.90 (t, J = 6.9 Hz, 2H),2.25 (t, J = 7.1 Hz, 2H), 1.72-1.87 (m, 2H), 1.61-1.72 (m, 2H),1.34-1.59 (m, 6H). Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₅H₂₃ClF₃N₅: 486.2 (M + H); Measured: 486.2. Cmpd2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-4-chloro-6-(2- 74trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine hydrochloride ¹H-NMR(400 MHz, d₆-DMSO) δ: 7.89 (d, J = 7.8 Hz, 1H), 7.75-7.83 (m, 1H),7.67-7.73 (m, 2H), 7.65 (d, J = 7.6 Hz, 1H), 7.04 (s, 1H), 4.30 (s, 3H),1.32 (s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₁H₁₉ClF₃N₅: 434.1 (M + H); Measured: 434.1.

Example 172-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridineHydrochloride (Compound #71)

STEP A:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine

A solution of2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine(101 mg, 0.232 mmol, Compound #74 freebase prepared according to Example16, STEPS A, B and C) in DCM (2 mL) was treated with SO₂Cl₂ (28.3 μL,0.348 mmol) and the resulting mixture was stirred at room temperaturefor 14 h. The resulting mixture was then diluted with MeOH (3 mL) andthe solvent was removed under reduced pressure. The residue waschromatographed on a 25-g SiO₂ pre-packed column eluting with 0:1-3:7EtOAc/hexanes to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine.¹H-NMR (400 MHz, CD₃OD) δ: 7.84 (d, J=7.8 Hz, 1H), 7.69-7.76 (m, 1H),7.68 (s, 1H), 7.62-7.67 (m, 1H), 7.59 (d, J=7.6 Hz, 1H), 4.14 (s, 3H),1.45 (s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₁H₁₈Cl₂F₃N₅: 468.1 (M+H). Measured: 468.1.

STEP B:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinehydrochloride

Following the procedure described in Example 16, STEP D,2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinehydrochloride was prepared from2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine(62.7 mg, 0.134 mmol) and 1M HCl in Et₂O (0.134 mL, 0.134 mmol). ¹H-NMR(400 MHz, d₆-DMSO) δ: 7.90 (d, J=7.8 Hz, 1H), 7.77-7.83 (m, 1H), 7.76(s, 1H), 7.68-7.74 (m, 1H), 7.65 (d, J=7.6 Hz, 1H), 4.07 (s, 3H), 1.41(s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₁H₁₈Cl₂F₃N₅:468.1 (M+H). Measured: 468.1.

Following the procedure described in Example 17 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 62 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-methoxy-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5- b]pyridinehydrochloride ¹H-NMR (400 MHz, DMSO-d₆) δ: 7.89 (d, J = 7.8 Hz, 1H),7.79 (t, J = 7.3 Hz, 1H), 7.70 (t, J = 7.6 Hz, 1H), 7.64 (d, J = 7.3 Hz,1H), 7.04 (s, 1H), 4.11 (s, 3H), 3.96 (s, 3H), 1.40 (s, 9H). MassSpectrum (LCMS, ESI pos.): Calculated for C₂₂H₂₁ClF₃N₅O: 464.2 (M + H);Measured: 464.2. Cmpd 762-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-(2-methoxy-ethoxy)-5-(2-trifluoromethyl-phenyl)-1H- imidazo[4,5-b]pyridinemethanesulfonic acid salt ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.89 (d, J = 7.6Hz, 1H), 7.79 (t, J = 7.5 Hz, 1H), 7.71 (t, J = 7.6 Hz, 1H), 7.64 (d, J= 7.3 Hz, 1H), 7.07 (s, 1H), 4.55-4.63 (m, 2H), 3.95 (s, 3H), 3.73-3.79(m, 2H), 3.33 (s, 3H), 2.34 (s, 3H), 1.40 (s, 9H). Mass Spectrum (LCMS,ESI pos.): Calculated for C₂₄H₂₅ClF₃N₅O₂: 508.2 (M + H); Measured:508.1.

Example 183-tert-Butyl-5-[7-methoxy-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridin-2-yl]-isoxazole-4-carbonitrilemethanesulfonic acid salt (Compound #70)

The title compound was prepared by reacting4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine(prepared as described in the Example 1) according to the processdescribed in Example 9, STEP A, and then reacting the resulting compoundwith 3-tert-butyl-4-cyano-isoxazole-5-carboxylic acid (prepared asdescribed in the Example J), according to the processes described inExample 25, STEP C and Example 26. ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.89 (d,J=7.8 Hz, 1H), 7.80 (t, J=7.3 Hz, 1H), 7.71 (t, J=7.6 Hz, 1H), 7.66 (d,J=7.6 Hz, 1H), 7.07 (s, 1H), 4.15 (s, 3H), 2.35 (s, 3H), 1.47 (s, 9H).Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₂H₁₈F₃N₅O₂: 442.2(M+H). Measured: 442.2.

Following the procedure described in Example 18 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 81 2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-7-methoxy-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine hydrochloride ¹H-NMR(400 MHz, d₆-DMSO) δ: 7.90 (d, J = 7.8 Hz, 1H), 7.81 (t, J = 7.5 Hz,1H), 7.72 (t, J = 7.6 Hz, 1H), 7.67 (d, J = 7.6 Hz, 1H), 7.09 (s, 1H),7.06 (s, 1H), 4.26 (s, 3H), 4.13 (s, 3H), 1.30 (s, 9H). Mass Spectrum(LCMS, ESI pos.): Calculated for C₂₂H₂₂F₃N₅O: 430.2 (M + H); Measured:430.2. Cmpd 112 2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-7-(2-methoxy-ethoxy)-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]- pyridinemethanesulfonic acid salt ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.91 (d, J = 7.8Hz, 1H), 7.82 (t, J = 7.5 Hz, 1H), 7.74 (t, J = 7.6 Hz, 1H), 7.68 (d, J= 7.6 Hz, 1H), 7.17 (br. s., 1H), 7.10 (s, 1H), 4.59-4.67 (m, 2H), 4.26(s, 3H), 3.76-3.83 (m, J = 5.1, 3.3 Hz, 2H), 3.34 (s, 3H), 2.36 (s, 3H),1.30 (s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₄H₂₆F₃N₅O₂: 474.2 (M + H); Measured: 474.2.

Example 192-(3-tert-Butyl-isoxazol-5-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinehydrochloride (Compound #73)

STEP A: 3-tert-Butyl-isoxazole-5-carboxylic acid[4-amino-2-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-3-yl]-amide and3-tert-Butyl-isoxazole-5-carboxylic acid[3-amino-2-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide

3-tert-butyl-4-isoxazole-5-carboxylic acid (72.8 mg, 0.430 mmol,prepared as in Example I, above) was dissolved in DCM (2 mL) and DMF (10μL) and oxalyl chloride (51.2 μL, 0.587 mmol) were added. The resultingmixture was stirred at room temperature for 1 h and the solvent wasremoved under reduced pressure. The resulting residue was dissolved inDCM (2 mL).

2-Chloro-6-(2-trifluoromethyl-phenyl)-pyridine-3,4-diamine (113 mg,0.391 mmol, prepared as in Example 16, STEP B) was dissolved in DCM (3mL) and then DIEA (136 μL, 0.782 mmol) was added. The acid chloridesolution prepared above was added dropwise to the stirred mixture, whichwas then stirred at room temperature for 18 h. The solvent was removedunder reduced pressure and the resulting residue was chromatographed ona 24-g SiO₂ pre-packed column eluting with 0:1-3:2 EtOAc/hexanes toyield 3-tert-butyl-isoxazole-5-carboxylic acid[4-amino-2-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-3-yl]-amide and3-tert-butyl-isoxazole-5-carboxylic acid[3-amino-2-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide. MassSpectrum (LCMS, ESI pos.): Calculated for C₂₀H₁₈ClF₃N₄O₂: 439.1 (M+H).Measured: 439.1.

STEP B:2-(3-tert-Butyl-isoxazol-5-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine

3-tert-Butyl-isoxazole-5-carboxylic acid[4-amino-2-chloro-6-(2-trifluoromethyl-phenyl)-pyridin-3-yl]-amide (73.9mg, 0.168 mmol, prepared as in the previous step) was dissolved in AcOH(1 mL) and the resulting solution was heated to 100° C. for 14 h. Theresulting mixture was cooled to room temperature and poured into H₂O (20mL). The aqueous phase was extracted with DCM (3×10 mL) and the combinedextracts were washed with sat NaHCO₃ solution (20 mL). The organic layerwas dried over MgSO₄, filtered and the solvent was removed under reducedpressure. The residue was dissolved in POCl₃ (1 mL) and heated for 16 hat 100° C. The resulting mixture was cooled to room temperature andpoured onto ice (˜20 mL). After the POCl₃ had been consumed, theprecipitate was isolated by filtration and washed with H₂O (2×20 mL).The solid was dissolved in DCM (25 mL) and the solution was dried overMgSO₄ and filtered. The solvent was removed under reduced pressure andthe crude product was chromatographed on a 24-g SiO₂ pre-packed columneluting with 0:1-2:3 EtOAc/hexanes to yield2-(3-tert-butyl-isoxazol-5-yl)-4-chloro-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine.¹H-NMR (400 MHz, CD₃OD) δ: 7.84 (d, J=7.8 Hz, 1H), 7.69-7.77 (m, 1H),7.62-7.68 (m, 2H), 7.59 (d, J=7.6 Hz, 1H), 7.30 (s, 1H), 1.43 (s, 9H).Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₀H₁₆ClF₃N₄O: 421.1(M+H). Measured: 421.1.

Example 202-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-chloro-phenyl)-1H-imidazo[4,5-b]pyridine(Compound #23)

STEP A: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid(6-bromo-3-nitro-pyridin-2-yl)-amide

A solution of 6-bromo-3-nitro-pyridin-2-ylamine (750 mg, 3.44 mmol) inTHF (20 mL) was treated with NaH (413 mg, 10.3 mmol) at room temperaturefor 1 h. Simultaneously a solution of5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid (969 mg,4.47 mmol, prepared as described in Example B) in DCM (20 mL) wastreated with oxalyl chloride (390 μL, 4.47 mmol) and DMF (4 drops) atroom temperature for 1 h. The acid chloride solution was concentrated todryness in vacuo, taken up in THF (10 mL), and added to the sodiumanilide solution. The resulting mixture was stirred at room temperaturefor 15 min, quenched with saturated aqueous NH₄Cl (50 mL), and extractedtwice with EtOAc (60 mL, 20 mL). The combined extracts were dried overMgSO₄ and concentrated in vacuo. The residue was purified on a 40-gSEPRA Si 50 SPE column (Isco system: Flow rate=25 mL/min;Eluent=EtOAc/hexanes, 1:99 v/v for 1 min, then 1:99 to 3:17 v/v over 40min) to yield 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid (6-bromo-3-nitro-pyridin-2-yl)-amide as a pale yellow solid. ¹H-NMR(400 MHz, CDCl₃) δ: 10.48 (br. s., 1H), 8.31 (d, J=8.6 Hz, 1H), 7.46 (d,J=8.6 Hz, 1H), 4.12 (s, 3H), 1.42 (s, 9H). Mass Spectrum (LCMS, APCIpos.): Calculated for C₁₄H₁₅BrClN₅O₃: 416.0 (M+H). Measured: 416.1.

STEP B: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[6-(2-chloro-phenyl)-3-nitro-pyridin-2-yl]-amide

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid (6-bromo-3-nitro-pyridin-2-yl)-amide (200 mg, 0.480 mmol, preparedas described in the previous step) in DME (20 mL) and water (5 mL) wastreated with 2-chlorophenylboronic acid (78.8 mg, 0.504 mmol) and cesiumcarbonate (469 mg, 1.44 mmol). The resulting mixture was degassed viasonication, placed under Ar, treated with PdCl₂(dppf).DCM (19.6 mg,0.0240 mmol), and heated to 90° C. for 3 h. The cooled mixture was thendiluted with water (40 mL) and extracted twice with EtOAc (50 mL). Thecombined extracts were dried over MgSO₄ and concentrated in vacuo. Theresidue was purified on a 24-g SEPRA Si 50 SPE column (Isco system: Flowrate=20 mL/min; Eluent=EtOAc/hexanes, 1:99 v/v for 10 min, then 1:99 to3:17 v/v over 40 min) to yield5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[6-(2-chloro-phenyl)-3-nitro-pyridin-2-yl]-amide as a yellow solid. MassSpectrum (LCMS, APCI pos.): Calculated for C₂₀H₁₉Cl₂N₅O₃: 448.1 (M+H).Measured: 448.0.

STEP C:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-chloro-phenyl)-1H-imidazo[4,5-b]pyridine

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [6-(2-chloro-phenyl)-3-nitro-pyridin-2-yl]-amide (157 mg, 0.350mmol, prepared as described in the previous step) in acetic acid (5 mL)was treated with iron powder (97.8 mg, 1.75 mmol) and heated to 100° C.for 3 h. The cooled mixture then was concentrated in vacuo, taken up inwater (50 mL) and extracted twice with EtOAc (50 mL). The combinedextracts were dried over MgSO₄ and concentrated in vacuo. The residuewas purified on a 12-g SEPRA Si 50 SPE column (Isco system: Flow rate=15mL/min; Eluent=EtOAc/hexanes, 1:99 v/v for 10 min, then 1:99 to 3:17 v/vover 40 min) to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-chloro-phenyl)-1H-imidazo[4,5-b]pyridineas a white solid. Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₀H₁₉Cl₂N₅: 400.1 (M+H). Measured: 400.2.

Following the procedures described in Example 20 and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 23 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-chloro-phenyl)-1H-imidazo[4,5-b]pyridine hydrochloride ¹H-NMR (400 MHz, CD₃OD)δ: 8.06 (d, J = 8.1 Hz, 1H), 7.48-7.55 (m, 2H), 7.42-7.48 (m, 1H),7.30-7.38 (m, 2H), 4.02 (s, 3H), 1.36 (s, 9H). Mass Spectrum (LCMS, APCIpos.): Calculated for C₂₀H₁₉Cl₂N₅: 400.1 (M + H); Measured: 400.2. Cmpd25 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethoxy-phenyl)-1H-imidazo[4,5-b]pyridine hydrochloride ¹H-NMR(400 MHz, CD₃OD) δ: 7.85 (dd, J = 7.6, 1.8 Hz, 1H), 7.73-7.83 (m, 1H),7.47-7.70 (m, 4H), 4.17 (br. s., 3H), 1.46 (s, 9H). Mass Spectrum (LCMS,APCI pos.): Calculated for C₂₁H₁₉ClF₃N₅O: 450.1 (M + H); Measured:450.2. Cmpd 32 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine hydrochloride ¹H-NMR(400 MHz, CD₃OD) δ: 8.49 (d, J = 8.3 Hz, 1H), 7.95 (d, J = 7.1 Hz, 1H),7.75-7.87 (m, 2H), 7.69 (d, J = 8.1 Hz, 2H), 4.19 (s, 3H), 1.47 (s, 9H).Mass Spectrum (LCMS, APCI pos.): Calculated for C₂₁H₁₉ClF₃N₅: 434.1 (M +H); Measured: 434.2. Cmpd 332-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-5-(2-fluoro-phenyl)-1H-imidazo[4,5-b]pyridine hydrochloride ¹H-NMR (CD₃OD) δ:8.39-8.53 (m, 1H), 7.84-7.98 (m, 2H), 7.53-7.66 (m, 1H), 7.25-7.47 (m,2H), 4.19 (s, 3H), 1.46 (s, 9H) Mass Spectrum (LCMS, APCI pos.):Calculated for C₂₀H₁₉ClFN₅: 384.1 (M + H); Measured: 384.3.

Example 218-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purinetrifluoroacetic acid salt (Compound #35)

STEP A: 5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid[6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide

A solution of6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-ylamine (150mg, 0.503 mmol, prepared as described in Example 2, STEP A) in THF (10mL) was treated with NaH (60.4 mg, 1.51 mmol, 60% dispersion in oil),and the resulting mixture was allowed to stir for 30 min at roomtemperature. 5-tert-Butyl-2-methyl-2H-pyrazole-3-carbonyl chloride (131mg, 0.654 mmol) was added as a solution in THF (3 mL). After 15 min, themixture was quenched with saturated aqueous NH₄Cl (20 mL) and extractedtwice with EtOAc (25 mL). The combined extracts were dried over MgSO₄and concentrated in vacuo. The residue was purified on a 12-g SEPRA Si50 SPE column (Isco system: Flow rate=15 mL/min; Eluent=EtOAc/hexanes,1:99 v/v for 10 min, then 1:99 to 1:4 v/v over 40 min) to yield5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid[6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide asa colorless glassy solid. ¹H-NMR (400 MHz, CDCl₃) δ: 9.10 (s, 1H),7.79-7.86 (m, 2H), 7.60-7.72 (m, 2H), 6.64 (s, 1H), 4.14 (s, 3H), 2.83(s, 3H), 1.33 (s, 9H). Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₁H₂₁F₃N₆O₃: 463.2 (M+H). Measured: 463.2.

STEP B: 5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid[5-amino-6-methyl-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide

A solution of 5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid[6-methyl-5-nitro-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide(226 mg, 0.490 mmol, prepared as described in the previous step) inethanol (10 mL) and water (5 mL) was treated with ammonium chloride (262mg, 4.90 mmol) and iron powder (137 mg, 2.45 mmol), and the mixture washeated to 50° C. for 4 h. Ethanol was removed in vacuo, and theresulting residue was diluted with water (20 mL) and extracted twicewith EtOAc (30 mL). The combined extracts were dried over MgSO₄ andconcentrated in vacuo. The residue was purified on a 12-g SEPRA Si 50SPE column (Isco system: Flow rate=20 mL/min; Eluent=EtOAc/hexanes, 1:99v/v for 10 min, then 1:99 to 1:4 v/v over 40 min) to yield5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid[5-amino-6-methyl-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide asan off-white solid. Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₁H₂₃F₃N₆O: 433.2 (M+H). Measured: 433.2.

STEP C:8-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purinetrifluoroacetic acid salt

A solution of 5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid[5-amino-6-methyl-2-(2-trifluoromethyl-phenyl)-pyrimidin-4-yl]-amide(45.8 mg, 0.106 mmol, prepared as described in the previous step) in1,4-dioxane (10 mL) was treated with CSA (49.2 mg, 0.213 mmol) andheated to 100° C. under a reflux condenser for 3 h. The cooled mixturewas then diluted with water (20 mL) and extracted twice with EtOAc (25mL). The combined extracts were dried over MgSO₄ and concentrated invacuo. The residue was purified by RP-HPLC on a C18 column eluting witha linear gradient of 10-80% CH₃CN in 0.1% TFA/H₂O over 25 min to8-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-6-methyl-2-(2-trifluoromethyl-phenyl)-7H-purinetrifluoroacetic acid salt as an off-white solid. ¹H-NMR (400 MHz, CD₃OD)δ: 7.77 (d, J=7.6 Hz, 1H), 7.57-7.70 (m, 3H), 6.87 (s, 1H), 4.27 (s,3H), 2.80 (s, 3H), 1.28 (s, 9H). Mass Spectrum (LCMS, APCI pos.):Calculated for C₂₁H₂₁F₃N₆: 415.2 (M+H). Measured: 415.2.

Example 222-(3-tert-Butyl-isoxazol-5-yl)-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine(Compound #31)

STEP A: 3-tert-Butyl-isoxazole-5-carboxylic acid(6-bromo-3-nitro-pyridin-2-yl)-amide

A solution of 6-bromo-3-nitro-pyridin-2-ylamine (500 mg, 2.29 mmol) inTHF (10 mL) was treated with NaH (275 mg, 6.88 mmol) at room temperaturefor 1 h. Simultaneously a solution of3-tert-butyl-isoxazole-5-carboxylic acid (524 mg, 3.10 mmol, prepared asdescribed in Example I) in DCM (10 mL) was treated with oxalyl chloride(270 μL, 3.10 mmol) and DMF (2 drops) at room temperature for 1 h. Theacid chloride solution was concentrated to dryness in vacuo, taken up inTHF (10 mL), and added to the sodium anilide solution. The resultingmixture was stirred at room temperature for 15 min, quenched withsaturated aqueous NH₄Cl (50 mL), and extracted twice with EtOAc (50 mL).The combined extracts were dried over MgSO₄ and concentrated in vacuo.The residue was purified on a 40-g SEPRA Si 50 SPE column (Isco system:Flow rate=25 mL/min; Eluent=EtOAc/hexanes, 1:99 v/v for 1 min, then 1:99to 3:17 v/v over 40 min) to yield 3-tert-butyl-isoxazole-5-carboxylicacid (6-bromo-3-nitro-pyridin-2-yl)-amide as a solid. ¹H-NMR (400 MHz,CDCl₃) δ: 10.85 (br. s., 1H), 8.37 (d, J=8.6 Hz, 1H), 7.48 (d, J=8.6 Hz,1H), 7.03 (s, 1H), 1.39 (s, 9H). Mass Spectrum (LCMS, APCI pos.):Calculated for C₁₃H₁₃BrN₄O₄: 369.0 (M+H). Measured: 369.0.

STEP B: 6-(2-Trifluoromethyl-phenyl)-3-nitro-pyridin-2-ylamine

A solution of 3-tert-butyl-isoxazole-5-carboxylic acid(6-bromo-3-nitro-pyridin-2-yl)-amide (139 mg, 0.377 mmol, prepared asdescribed in the previous step) in DME (15 mL) and water (5 mL) wastreated with 2-trifluoromethylphenylboronic acid (85.8 mg, 0.452 mmol)and cesium carbonate (245 mg, 0.753 mmol). The resulting mixture wasde-gassed via sonication, placed under Ar, treated with PdCl₂(dppf).DCM(15.4 mg, 0.019 mmol), and heated to 80° C. for 18 h. The cooled mixturewas diluted with water (50 mL) and extracted twice with EtOAc (50 mL, 25mL). The combined extracts were dried over MgSO₄ and concentrated invacuo. The residue was purified on a 12-g SEPRA Si 50 SPE column (Iscosystem: Flow rate=15 mL/min; Eluent=EtOAc/hexanes, 1:99 v/v for 10 min,then 1:99 to 3:17 v/v over 40 min) to yield6-(2-trifluoromethyl-phenyl)-3-nitro-pyridin-2-ylamine as a yellowsolid. Mass Spectrum (LCMS, APCI pos.): Calculated for C₁₂H₈F₃N₃O₂:284.1 (M+H). Measured: 284.0.

STEP C: 3-tert-Butyl-isoxazole-5-carboxylic acid[3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide

A solution of 6-(2-trifluoromethyl-phenyl)-3-nitro-pyridin-2-ylamine(69.0 mg, 0.244 mmol, prepared as described in the previous step) in THF(10 mL) was treated with NaH (29.2 mg, 0.731 mmol, 60% dispersion inoil) at room temperature for 1 h. Simultaneously, a solution of3-tert-butyl-isoxazole-5-carboxylic acid (49.5 mg, 0.292 mmol, preparedas described in Example L) in DCM (10 mL) was treated with oxalylchloride (25.5 μL, 0.292 mmol) and DMF (2 drops) at room temperature for1 h. The resulting mixture was concentrated in vacuo, taken up in THF(10 mL) and added to the sodium anilide solution. The resulting mixturewas then allowed to stir at room temperature for 15 min, quenched withsaturated aqueous NH₄Cl (20 mL), and extracted twice with EtOAc (20 mL).The combined extracts were dried over MgSO₄ and concentrated in vacuo.The residue was purified on a 4-g SEPRA Si 50 SPE column (Isco system:Flow rate=10 mL/min; Eluent=EtOAc/hexanes, 1:99 v/v for 5 min, then 1:99to 1:9 v/v over 40 min) to yield 3-tert-butyl-isoxazole-5-carboxylicacid [3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]amide as a whitesolid. Mass Spectrum (LCMS, APCI pos.): Calculated for C₂₀H₁₇F₃N₄O₄:435.1 (M+H). Measured: 435.1.

STEP D:2-(3-tert-Butyl-isoxazol-5-yl)-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine

A solution of 3-tert-butyl-isoxazole-5-carboxylic acid[3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide (78.0 mg,0.180 mmol, prepared as described in the previous step) in acetic acid(5 mL) was treated with iron powder (50.1 mg, 0.898 mmol) and heated to100° C. for 2 h. The volume of acetic acid was reduced to 2 mL byconcentrating in vacuo, and saturated aqueous NaHCO₃ (50 mL) was added.The resulting mixture was extracted twice with EtOAc (60 mL). Thecombined extracts were dried over MgSO₄ and concentrated in vacuo. Theresidue was purified on a 4-g SEPRA Si 50 SPE column (Isco system: Flowrate=10 mL/min; Eluent=EtOAc/hexanes, 1:99 v/v for 5 min, then 1:99 to1:9 v/v over 40 min) to yield2-(3-tert-butyl-isoxazol-5-yl)-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridineas a white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 10.06 (br. s., 1H), 8.16(d, J=8.3 Hz, 1H), 7.81 (d, J=8.1 Hz, 1H), 7.64 (d, J=7.6 Hz, 1H),7.52-7.60 (m, 2H), 7.46 (d, J=8.3 Hz, 1H), 7.07 (s, 1H), 1.42 (s, 9H).Mass Spectrum (LCMS, APCI pos.): Calculated for C₂₀H₁₇F₃N₄O: 387.1(M+H). Measured: 387.1.

Following the procedures described in Example 22, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 262-(3-tert-Butyl-isoxazol-5-yl)-5-(2-chloro-phenyl)-1H-imidazo[4,5-b]pyridine ¹H-NMR (400 MHz, CDCl₃) δ: 10.64 (br. s., 1H), 8.19 (d, J =8.3 Hz, 1H), 7.68 (d, J = 8.3 Hz, 1H), 7.63 (dd, J = 7.1, 2.3 Hz, 1H),7.48-7.54 (m, 1H), 7.34-7.39 (m, 2H), 7.05 (s, 1H), 1.42 (s, 9H). MassSpectrum (LCMS, APCI pos.): Calculated for C₁₉H₁₇ClN₄O: 353.1 (M + H);Measured: 353.1. Cmpd 272-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-5-(2-chloro-phenyl)-1H-imidazo[4,5-b]pyridine ¹H-NMR (400 MHz, CDCl₃) δ: 8.16 (d, J = 8.3 Hz,1H), 7.45-7.62 (m, 3H), 7.33-7.42 (m, 2H), 6.61 (s, 1H), 4.37 (s, 3H),1.37 (s, 9H). Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₀H₂₀ClN₅: 366.1 (M + H); Measured: 366.3. Cmpd 292-(3-tert-Butyl-isoxazole-5-yl)-5-(2-trifluoromethoxy-phenyl)-1H-imidazo[4,5-b]pyridine ¹H-NMR (400 MHz, CDCl₃) δ: 10.69 (br. s., 1H),8.19 (d, J = 8.6 Hz, 1H), 7.84 (dd, J = 7.1, 2.3 Hz, 1H), 7.72 (d, J =8.3 Hz, 1H), 7.41-7.47 (m, 2H), 7.36-7.41 (m, 1H), 7.06 (s, 1H), 1.41(s, 9H). Mass Spectrum (LCMS, APCI pos.): Calculated for C₂₀H₁₇F₃N₄O₂:403.1 (M + H); Measured: 403.2. Cmpd 302-(3-tert-Butyl-isoxazol-5-yl)-5-(2-fluoro-phenyl)-1H-imidazo[4,5-b]pyridine ¹H-NMR (400 MHz, CDCl₃) δ: 8.17 (d, J = 7.6 Hz, 1H), 7.97 (t,J = 7.2 Hz, 1H), 7.84 (dd, J = 8.6, 2.0 Hz, 1H), 7.34-7.42 (m, 1H),7.15-7.26 (m, 2H), 7.06 (s, 1H), 1.41 (s, 9H). Mass Spectrum (LCMS, APCIpos.): Calculated for C₁₉H₁₇FN₄O: 337.1 (M + H); Measured: 337.2. Cmpd36 2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-5-(2-fluoro-phenyl)-1H-imidazo[4,5-b]pyridine ¹H-NMR (400 MHz, CDCl₃) δ: 8.15 (d, J = 8.3 Hz,1H), 7.89 (td, J = 7.8, 1.8 Hz, 1H), 7.77 (dd, J = 8.3, 2.0 Hz, 1H),7.34-7.42 (m, 1H), 7.21-7.26 (m, 1H), 7.15-7.21 (m, 1H), 6.50 (s, 1H),4.35 (s, 3H), 1.34 (s, 9H). Mass Spectrum (LCMS, APCI pos.): Calculatedfor C₂₀H₂₀FN₅: 350.2 (M + H); Measured: 350.2.

Example 232-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine(Compound #34)

Step A: 5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid(5-tert-butyl-2-methyl-2H-pyrazole-3-carbonyl)-[3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide

A solution of 3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine(200 mg, 0.706 mmol, prepared as described in Example 22, STEP B) in THF(15 mL) was treated with NaH (84.7 mg, 2.12 mmol) at room temperaturefor 1 h. The resulting mixture was treated with a solution of5-tert-butyl-2-methyl-2H-pyrazole-3-carbonyl chloride (156 mg, 0.777mmol) as a solution in THF (6 mL) and allowed to stir at roomtemperature for 15 min. The mixture was quenched with saturated aqueousNH₄Cl (25 mL) and extracted twice with EtOAc (35 mL). The combinedextracts were dried over MgSO₄ and concentrated in vacuo. The residuewas purified on a 24-g SEPRA Si 50 SPE column (Isco system: Flow rate=20mL/min; Eluent=EtOAc/hexanes, 1:99 v/v for 5 min, then 1:99 to 1:9 v/vover 40 min) to yield 5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylicacid(5-tert-butyl-2-methyl-2H-pyrazole-3-carbonyl)-[3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amideas a yellow solid. Mass Spectrum (LCMS, APCI pos.): Calculated forC₃₀H₃₂F₃N₇O₄: 612.3 (M+H). Measured: 612.1.

Step B:2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine

A solution of 5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid(5-tert-butyl-2-methyl-2H-pyrazole-3-carbonyl)-[3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-yl]-amide(339 mg, 0.554 mmol, prepared as described in the previous step) wastaken up in acetic acid (10 mL), treated with iron powder (124 mg, 2.22mmol), and heated to 90° C. for 15 h. The resulting mixture wasconcentrated to a volume of 3 mL, treated with saturated aqueous NaHCO₃(75 mL) and extracted twice with EtOAc (75 mL, 40 mL). The combinedextracts were dried over MgSO₄ and concentrated in vacuo. The residuewas purified on a 24-g SEPRA Si 50 SPE column (Isco system: Flow rate=20mL/min; Eluent=EtOAc/hexanes, 1:19 v/v for 5 min, then 1:19 to 1:4 v/vover 40 min) to yield2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridineas a white solid. ¹H-NMR (400 MHz, CDCl₃) δ: 8.13 (d, J=8.3 Hz, 1H),7.81 (d, J=8.1 Hz, 1H), 7.61-7.68 (m, 1H), 7.52-7.59 (m, 2H), 7.40 (d,J=8.1 Hz, 1H), 6.56 (s, 1H), 4.37 (s, 3H), 1.37 (s, 9H). Mass Spectrum(LCMS, APCI pos.): Calculated for C₂₁H₂₀F₃N₅: 400.2 (M+H). Measured:400.2.

Following the procedures described in Example 23 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 37 2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-5-(2-trifluoromethoxy- phenyl)-1H-imidazo[4,5-b]pyridine ¹H-NMR (400 MHz,CDCl₃) δ: 8.15 (d, J = 8.3 Hz, 1H), 7.79 (d, J = 6.3 Hz, 1H), 7.62 (d, J= 8.3 Hz, 1H), 7.37-7.49 (m, 3H), 6.59 (s, 1H), 4.38 (s, 3H), 1.34 (s,9H). Mass Spectrum (LCMS, APCI pos.): Calculated for C₂₁H₂₀F₃N₅O: 416.2(M + H); Measured: 416.2.

Example 242-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(4-methyl-piperazin-1-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt (Compound #28)

STEP A: 6-Chloro-2-(4-methyl-piperazin-1-yl)-3-nitro-pyridin-4-ylamine

A solution of 2,6-dichloro-3-nitro-pyridin-4-ylamine (0.500 g, 2.40mmol) in DMF (5 mL) was treated with K₂CO₃ (1.66 g, 12.0 mmol) and1-methylpiperazine (0.267 mL, 2.40 mmol) at room temperature for 18 h.The resulting mixture was diluted with water (75 mL) and extracted threetimes with EtOAc (50 mL). The combined extracts were dried over MgSO₄and concentrated in vacuo. The residue was purified on a 24-g SEPRA Si50 SPE column (Isco system: Flow rate=15 mL/min; Eluent=EtOAc-hexanes,3:1 v/v for 5 min, then 3:1 to 1:0 v/v over 40 min) to yield6-chloro-2-(4-methyl-piperazin-1-yl)-3-nitro-pyridin-4-ylamine as abright yellow solid. ¹H-NMR (400 MHz, CD₃OD) δ: 6.22 (s, 1H), 3.39-3.45(m, 4H), 2.49-2.55 (m, 4H), 2.34 (s, 3H). Mass Spectrum (LCMS, APCIpos.): Calculated for C₁₀H₁₄ClN₅O₂: 272.1 (M+H). Measured: 272.1.

STEP B:2-(4-Methyl-piperazin-1-yl)-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine

A solution of6-chloro-2-(4-methyl-piperazin-1-yl)-3-nitro-pyridin-4-ylamine (578 mg,2.13 mmol, prepared as described in the previous step) in 1,4-dioxane(20 mL) was treated with K₃PO₄ (2.03 g, 9.58 mmol),1,1′-bis(di-tert-butylphosphino)ferrocene (101 mg, 0.213 mmol), and2-trifluoromethylphenylboronic acid (910 mg, 4.79 mmol). The resultingmixture was degassed via sonication, Pd(OAc)₂ (47.8 mg, 0.213 mmol) wasadded, and the mixture was heated to 80° C. for 18 h. The cooled mixturewas diluted with water (50 mL) and extracted twice with EtOAc (60 mL).The combined extracts were dried over MgSO₄ and concentrated in vacuo.The residue was purified on a 40-g SEPRA Si 50 SPE column (Isco system:Flow rate=20 mL/min; Eluent=EtOAc-hexanes, 3:1 v/v for 5 min, then 3:1to 1:0 v/v over 40 min) to yield2-(4-methyl-piperazin-1-yl)-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamineas an orange solid. ¹H-NMR (400 MHz, CDCl₃) δ: 7.74 (d, J=7.6 Hz, 1H),7.55-7.61 (m, 1H), 7.45-7.54 (m, 2H), 6.13 (s, 1H), 6.02 (br. s., 2H),3.46-3.52 (m, 4H), 2.44-2.50 (m, 4H), 2.32 (s, 3H). Mass Spectrum (LCMS,APCI pos.): Calculated for C₁₇H₁₈F₃N₅O₂: 382.1 (M+H). Measured: 382.1.

STEP C: 5-tert-Butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[2-(4-methyl-piperazin-1-yl)-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide

A solution of2-(4-methyl-piperazin-1-yl)-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine(240 mg, 0.630 mmol, prepared as described in the previous step) in THF(10 mL) was treated with NaH (75.6 mg, 1.89 mmol, 60% dispersion inmineral oil) at room temperature for 1 h. At the same time, a solutionof 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid (164 mg,0.756 mmol, prepared as described in Example B) in DCM (10 mL) wastreated with oxalyl chloride (66.0 μL, 0.756 mmol) and DMF (2 drops) atroom temperature for 1 h. The resulting mixture was concentrated invacuo, taken up in THF (6 mL), and added to the sodium anilide solutionat room temperature. The solution was stirred at room temperature for 30min, quenched with saturated aqueous NH₄Cl (20 mL), and extracted threetimes with EtOAc (25 mL). The combined extracts were dried over MgSO₄and concentrated in vacuo. The residue was purified on a 24-g SEPRA Si50 SPE column (Isco system: Flow rate=15 mL/min; Eluent=EtOAc-hexanes,3:2 v/v for 5 min, then 3:2 to 4:1 v/v over 40 min) to yield5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[2-(4-methyl-piperazin-1-yl)-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amideas an orange solid. Mass Spectrum (LCMS, APCI pos.): Calculated forC₂₆H₂₉ClF₃N₇O₃: 580.2 (M+H). Measured: 580.2.

STEP D:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(4-methyl-piperazin-1-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid[2-(4-methyl-piperazin-1-yl)-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-yl]-amide(300 mg, 0.517 mmol, prepared as described in the previous step) in AcOH(10 mL) was treated with iron powder (86.7 mg, 1.55 mmol) and heated to100° C. for 5 h. The mixture was concentrated in vacuo, treated withsaturated aqueous NaHCO₃ (25 mL), and extracted three times with EtOAc(30 mL). The combined extracts were dried over MgSO₄ and concentrated invacuo. The residue was purified on a 12-g SEPRA Si 50 SPE column (Iscosystem: Flow rate=10 mL/min; Eluent=EtOAc-hexanes, 1:99 v/v for 5 min,then 1:99 to 3:17 v/v over 40 min) to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(4-methyl-piperazin-1-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridineas a tan solid. ¹H-NMR (400 MHz, CDCl₃) δ: 9.99 (s, 1H), 7.76 (d, J=7.6Hz, 1H), 7.56-7.61 (m, 2H), 7.45-7.52 (m, 1H), 6.95 (s, 1H), 4.30 (s,7H), 2.59 (t, J=4.9 Hz, 4H), 2.36 (s, 3H), 1.45 (s, 9H). Mass Spectrum(LCMS, APCI pos.): Calculated for C₂₆H₂₉ClF₃N₇: 532.2 (M+H). Measured:532.2.

STEP E:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(4-methyl-piperazin-1-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt

A solution of2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(4-methyl-piperazin-1-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine(158 mg, 0.297 mmol, prepared as described in the previous step) in DCM(10 mL) was treated with methanesulfonic acid (19.2 μL, 0.297 mmol) atroom temperature for 1 h. The resulting mixture was concentrated invacuo, triturated with hexanes, and filtered. The solid was air-driedand placed under high vacuum for 30 min to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(4-methyl-piperazin-1-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt as a tan solid. ¹H-NMR (400 MHz, CD₃OD) δ:7.83 (d, J=8.3 Hz, 1H), 7.68-7.74 (m, 1H), 7.58-7.65 (m, 2H), 7.20 (s,1H), 5.52 (d, J=13.1 Hz, 2H), 4.12 (s, 3H), 3.64 (d, J=11.6 Hz, 2H),3.45-3.58 (m, 2H), 3.26 (br. s., 2H), 2.96 (s, 3H), 2.69 (s, 4H), 1.45(s, 9H). Mass Spectrum (LCMS, APCI pos.): Calculated for C₂₆H₂₉ClF₃N₇:532.2 (M+H). Measured: 532.2.

Following the procedures described in Example 24 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 223-tert-Butyl-1-methyl-5-[4-piperidin-1-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine-2-yl]-1H-pyrazole-4-carbonitrile ¹H-NMR (400MHz, CDCl₃) δ: 9.95 (s, 1H), 7.76 (d, J = 7.8 Hz, 1H), 7.56-7.60 (m,2H), 7.45-7.52 (m, 1H), 6.87 (s, 1H), 4.36 (s, 3H), 4.21 (d, J = 5.1 Hz,4H), 1.72 (br. s., 6H), 1.47 (s, 9H). Mass Spectrum (LCMS, APCI pos.):Calculated for C₂₇H₂₈F₃N₇: 508.2 (M + H); Measured: 508.4. Cmpd 243-tert-Butyl-1-methyl-5-[4-(4-methyl-piperazin-1-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1H-pyrazole-4-carbonitrile methanesulfonic acid salt ¹H-NMR (400 MHz, CD₃OD) δ: 7.85(d, J = 8.1 Hz, 1H), 7.72 (d, J = 7.6 Hz, 1H), 7.61-7.68 (m, 2H), 7.21(s, 1H), 5.55 (m, 2H), 4.17 (s, 3H), 3.49-3.71 (m, 4H), 3.25-3.31 (m,2H), 2.97 (s, 3H), 2.69 (s, 3H), 1.48 (s, 9H). Mass Spectrum (LCMS, APCIpos.): Calculated for C₂₇H₂₉F₃N₈: 523.3 (M + H); Measured: 523.3.

Example 252-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine(Compound #11)

STEP A: 6-Chloro-2-methoxy-3-nitro-pyridin-4-ylamine

To a stirred solution of 2,6-dichloro-3-nitro-pyridin-4-ylamine (20.0 g,96.1 mmol) in MeOH (100 mL) was added 0.5 M NaOMe in MeOH (423 mL, 211mmol) dropwise. The resulting mixture was stirred at room temperaturefor 3 h. The resulting mixture was then concentrated to ca. ⅓ of thevolume and slowly poured into saturated NH₄CI solution (200 mL). Theresulting mixture was extracted with EtOAc (3×150 mL). The combinedEtOAc extracts were dried (Na₂SO₄), and concentrated in vacuo to yield atan solid which was suspended in hexane (500 mL) and sonicated for 10min. The resulting solid was collected by suction filtration and driedunder suction to yield 6-chloro-2-methoxy-3-nitro-pyridin-4-ylamine as apowder. ¹H-NMR (400 MHz, CDCl₃) δ: 6.39 (s, 1H), 6.28 (br s, 2H), 4.05(s, 3H).

STEP B: 6-(2-Chloro-phenyl)-2-methoxy-3-nitro-pyridin-4-ylamine

A solution of 6-chloro-2-methoxy-3-nitro-pyridin-4-ylamine (8.90 g, 43.7mmol, prepared as described in the previous step) in 1,4-dioxane (200mL) and water (100 mL) was treated with Cs₂CO₃ (35.6 g, 109 mmol) and2-chlorophenylboronic acid (10.2 g, 65.5 mmol) under Ar. To theresulting mixture was added Cl₂Pd(dppf).DCM (3.50 g, 4.30 mmol) and themixture was then heated to 90° C. for 15 h. The cooled mixture wasdiluted with EtOAc (500 mL) and washed with water (500 mL). The aqueouslayer was extracted twice with EtOAc (3×300 mL). The combined extractswere dried over MgSO₄ and concentrated in vacuo. The residue waspurified on silica (0:100-50:50 EtOAc/hexanes) to yield a yellowishwhite solid. The solid was dissolved in EtOAc (200 mL) with heating andhexane (150 mL) was added. The resulting solution was concentrated untilthe solution became turbid and heated to yield a clear solution whichwas left overnight at room temperature. The crystals formed werecollected by suction filtration. This recrystallization procedure wasrepeated twice to yield6-(2-chloro-phenyl)-2-methoxy-3-nitro-pyridin-4-ylamine. ¹H-NMR (400MHz, CDCl₃) δ: 7.59-7.66 (m, 1H), 7.43-7.51 (m, 1H), 7.31-7.39 (m, 2H),6.69 (s, 1H), 6.11 (br. s., 2H), 4.07 (s, 3H). Mass Spectrum (LCMS, ESIpos.) Calculated for C₁₂H₁₀N₃O₃Cl: 280.0 (M+H). Measured: 280.1.

STEP C:2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine

A solution of 6-(2-chloro-phenyl)-2-methoxy-3-nitro-pyridin-4-ylamine(8.10 g, 29.0 mmol, prepared as described in the previous step) in THF(200 mL) was treated with NaH (3.47 g, 86.8 mmol, 60% dispersion in oil)at 0° C. for 1 h. Simultaneously a solution of5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid (6.90 g,31.8 mmol, prepared as described in Example B) in DCM (200 mL) wastreated with oxalyl chloride (3.2 mL, 36 mmol) and DMF (50 μL) at 0° C.and stirred at room temperature for 1 h. The volatile components wereremoved in vacuo, and the resulting residue was dried in vacuo for 15min taken up in THF (20 mL) and added to the above sodium anilidesolution at 0° C. The resulting mixture was stirred at room temperaturefor 30 min, quenched with saturated aqueous NH₄Cl (20 mL), and extractedwith EtOAc (3×100 mL). The combined extracts were dried over MgSO₄ andconcentrated in vacuo. The resulting solid was suspended in hexane (200mL) and sonicated for 10 min and collected by suction filtration toyield 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylic acid[6-(2-chloro-phenyl)-2-methoxy-3-nitro-pyridin-4-yl]-amide as atan-colored solid.

A solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [6-(2-chloro-phenyl)-2-methoxy-3-nitro-pyridin-4-yl]-amide (9.10 g,32.6 mmol, prepared as described in the previous step above) in AcOH (50mL) was treated with iron powder (6.80 g, 122 mmol) and heated to 100°C. for 3 h. The resulting mixture was cooled to room temperature andtreated with EtOAc (100 mL). The resulting mixture was then filteredthrough a pad of diatomaceous earth and the filtrate was concentrated invacuo. The residue was purified on silica (0:100-100:0 EtOAc/hexane) toyield a white solid. The solid obtained was dissolved in Et₂O (200 mL)with heating and sonication. Hexanes (50 mL) were added and theresulting mixture was concentrated until a precipitate started to form.The solution was left at room temperature overnight and the solid formedwas collected by suction filtration to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine.¹H-NMR (400 MHz, CD₃OD) δ: 7.76-7.58 (m, 1H), 7.49 (m, 2H), 7.39 (m,2H), 4.16 (s, 3H), 4.04 (s, 3H), 1.44 (s, 9H). Mass Spectrum (LCMS, ESIpos.) Calculated for C₂₁H₂₁N₅OCl₂: 430.1 (M+H). Measured: 430.2.

Example 262-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt (Compound #11)

A solution of2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine(159 mg, 0.370 mmol, prepared as described in Example 25) in DCM (10 mL)and treated with methanesulfonic acid (35.6 mg, 0.370 mmol) at roomtemperature for 1 h. The solution was concentrated in vacuo and theresulting solid was triturated with hexanes, filtered, washed withhexanes, air-dried, and placed under high vacuum for 30 min to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinemethanesulfonic acid salt as a white solid. ¹H-NMR (400 MHz, CD₃OD) δ:7.64-7.69 (m, 2H), 7.62-7.64 (m, 1H), 7.50-7.61 (m, 2H), 4.75-4.81 (m,3H), 4.16 (s, 3H), 2.70 (s, 3H), 1.46 (s, 9H). Mass Spectrum (LCMS, APCIpos.) Calculated for C₂₁H₂₁N₅₀Cl₂: 430.1 (M+H). Measured: 430.2.

Example 272-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinetrifluoroacetic acid salt (Compound #11)

To a solution of 5-tert-butyl-4-chloro-2-methyl-2H-pyrazole-3-carboxylicacid [6-(2-chloro-phenyl)-2-methoxy-3-nitro-pyridin-4-yl]amide (96.3 mg,0.201 mmol, prepared as described in Example 25, STEP C) in HOAc (10mL), was added iron powder (56.2 mg, 1.01 mmol) and the resultingmixture was heated to 100° C. for 5 h. The HOAc was then removed invacuo. The resulting residue was partitioned between EtOAc (30 mL) andsaturated aqueous NaHCO₃ (20 mL). The organic layer was dried over MgSO₄and concentrated in vacuo. The resulting residue was purified on a 12-gSEPRA Si 50 SPE column (Isco system: Flow rate=20 mL/min;Eluent=EtOAc/hexanes, 1:99 v/v for 10 min, then 1:99 to 1:4 v/v over 40min). The resulting residue was further purified by RP-HPLC on a C18column eluting with a linear gradient of 40-100% CH₃CN in 0.1% TFA/H₂Oover 20 min to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinetrifluoroacetic acid salt as a white solid. ¹H-NMR (CD₃OD) δ: 7.69 (dd,J=7.2, 2.1 Hz, 1H), 7.50-7.56 (m, 2H), 7.37-7.46 (m, 2H), 4.25 (s, 3H),4.05 (s, 3H), 1.45 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculatedfor C₂₁H₂₁N₅OCl₂: 430.1 (M+H). Measured: 430.2.

Example 282-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinepotassium salt (Compound #11)

To a solution of2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine(11.0 g, 25.7 mmol, prepared as described in Example 25) in THF (20 mL)and MeOH (20 mL) at 0° C., a solution of KOMe (1.90 g, 25.7 mmol) inMeOH (20 mL) was added dropwise. The resulting mixture was stirred atroom temperature for 1 h and concentrated. The resulting thick syrup wasdried in vacuo at 80° C. overnight to yield2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinepotassium salt as a white foam. ¹H-NMR (400 MHz, CD₃OD) δ: 7.66-7.69 (m,1H), 7.46-7.50 (m, 1H), 7.43 (s, 1H), 7.28-7.39 (m, 2H), 4.12 (s, 3H),3.90 (s, 3H), 1.44 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculatedfor C₂₁H₂₁N₅OCl₂: 430.1 (M+H). Measured: 430.2.

Example 292-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinehydrochloride (Compound #11)

2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinehydrochloride was prepared from2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridineprepared as described in Example 25) according to the proceduredescribed in Example 2, STEP C substituting 6M HCl in IPA with 2M HCl inEt₂O. ¹H-NMR (CD₃OD) δ: 7.69-7.65 (m, 1H), 7.53-7.60 (m, 2H), 7.42-7.49(m, 2H), 4.40 (s, 3H), 4.10 (s, 3H), 1.47 (s, 9H). Mass Spectrum (LCMS,ESI pos.) Calculated for C₂₁H₂₁N₅OCl₂: 430.1 (M+H). Measured: 430.2.

Example 302-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinesodium salt (Compound #11)

2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinesodium salt was prepared from2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridineprepared as described in Example 25) according to the proceduredescribed in Example 5, STEP E. ¹H-NMR (CD₃OD) δ: 7.67 (d, J=7.8 Hz,1H), 7.48 (d, J=8.2 Hz, 1H), 7.41 (s, 1H), 7.26-7.39 (m, 2H), 4.11 (s,3H), 3.87 (s, 3H), 1.44 (s, 9H). Mass Spectrum (LCMS, ESI pos.)Calculated for C₂₁H₂₁N₅OCl₂: 430.1 (M+H). Measured: 430.2.

Following the procedures described in Examples 25-30 above, andsubstituting suitably selected and substituted reagents, startingmaterials and conditions as would be readily apparent to those skilledin the art, the following representative compounds of the presentinvention were prepared.

Cmpd 2 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethoxy-phenyl)-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR(CD₃OD) δ: 7.96-8.04 (m, 1H), 7.61 (s, 1H), 7.47-7.54 (m, 2H), 7.41-7.47(m, 1H), 4.21 (s, 3H), 4.06 (s, 3H), 1.46 (s, 9H). Mass Spectrum (LCMS,APCI pos.) Calculated For C₂₂H₂₁ClF₃N₅O₂: 480.1 (M + H), Measured:480.3. Cmpd 122-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine ¹H-NMR (CD₃OD) δ: 7.68 (dd, J = 7.2,1.9 Hz, 1H), 7.48-7.54 (m, 1H), 7.32-7.45 (m, 3H), 6.76 (br. s., 1H),4.26 (s, 3H), 4.15 (s, 3H), 1.36 (s, 9H). Mass Spectrum (LCMS, APCIpos.) Calculated For C₂₁H₂₂ClN₅O: 396.2 (M + H), Measured: 396.2. Cmpd13 3-tert-Butyl-5-[4-methoxy-6-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-c]pyridine-2-yl]-isoxazole-4-carbonitrile methanesulfonicacid salt ¹H-NMR (DMSO-d₆) δ: 7.87 (d, J = 7.8 Hz, 1H), 7.74-7.81 (m,1H), 7.64-7.71 (m, 2H), 7.35 (s, 1H), 4.05 (s, 3H), 2.33 (s, 3H), 1.48(s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₂H₁₈F₃N₅O₂:442.2 (M + H), Measured: 442.1. Cmpd 143-tert-Butyl-5-[4-isopropoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrilebenzenesulfonic acid salt ¹H-NMR (CD₃OD) δ: 7.92-8.00 (m, 1H), 7.80-7.86(m, 4H), 7.68-7.75 (m, 1H), 7.56 (s, 1H), 7.36-7.48 (m, 3H), 6.43 (spt,J = 6.1 Hz, 1H), 4.18 (s, 3H), 1.63 (d, J = 6.1 Hz, 6H), 1.46 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₅H₂₅F₃N₆O: 483.2 (M +H), Measured: 483.1. Cmpd 153-tert-Butyl-1-methyl-5-[4-(2,2,2-trifluoro-ethoxy)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine-2-yl]-1H-pyrazole-4-carbonitrile methanesulfonic acid salt ¹H-NMR (CD₃OD) δ: 7.85(d, J = 8.1 Hz, 1H), 7.69-7.76 (m, 1H), 7.60-7.68 (m, 2H), 7.48-7.52 (m,1H), 5.09-5.21 (m, 2H), 4.14 (s, 3H), 2.70 (s, 3H), 1.48 (s, 9H). MassSpectrum (LCMS, APCI pos.) Calculated For C₂₄H₂₀F₆N₆O: 523.2 (M + H),Measured: 523.2. Cmpd 162-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine benzenesulfonicacid salt ¹H-NMR (CD₃OD) δ: 7.93-7.98 (m, 1H), 7.76-7.88 (m, 4H),7.68-7.74 (m, 1H), 7.55 (s, 1H), 7.40-7.47 (m, 3H), 6.33 (spt, J = 6.0Hz, 1H), 4.20 (s, 3H), 1.62 (d, J = 6.1 Hz, 6H), 1.51 (s, 9H). MassSpectrum (LCMS, ESI pos.) Calculated For C₂₅H₂₆ClN₅O: 492.2 (M + H),Measured: 492.0. Cmpd 173-tert-Butyl-5-[6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine-2-yl]-1-methyl-1H-pyrazole-4-carbonitrile methanesulfonicacid salt ¹H-NMR (CD₃OD) δ: 7.63-7.70 (m, 3H), 7.50-7.61 (m, 2H), 4.76(s, 3H), 4.19 (s, 3H), 2.70 (s, 3H), 1.49 (s, 9H). Mass Spectrum (LCMS,APCI pos.) Calculated For C₂₂H₂₁ClN₆O: 421.2 (M + H), Measured: 421.3.Cmpd 18 2-(2-methyl-6,6-spirocyclohexyl-2,4,5,6-tetrahydro-cyclopenta-2H-pyrazol-3-yl)-4-methoxy-6-(2-chloro-phenyl)-3H-imidazo[4,5-c]pyridine ¹H-NMR (CD₃OD) δ: 7.66-7.71 (m, 1H), 7.55 (br. s., 2H),7.29-7.41 (m, 2H), 4.23 (s, 3H), 4.18 (s, 3H), 2.82-2.89 (m, 2H), 2.34(t, J = 6.9 Hz, 2H), 1.68-1.82 (m, 4H), 1.46-1.63 (m, 6H). Mass Spectrum(LCMS, ESI pos.) Calculated For C₂₅H₂₆ClN₅O: 448.2 (M + H), Measured:448.3. Cmpd 192-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(2,2,2-trifluoroethoxy)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5- c]pyridinemethanesulfonic acid salt ¹H-NMR (CD₃OD) δ: 7.86 (d, J = 7.6 Hz, 1H),7.70-7.78 (m, 1H), 7.62-7.70 (m, 2H), 7.53 (s, 1H), 5.22 (q, J = 8.8 Hz,2H), 4.07 (s, 3H), 2.70 (s, 3H), 1.45 (s, 9H). Mass Spectrum (LCMS, APCIpos.) Calculated For C₂₃H₂₀ClF₆N₅O: 532.1 (M + H), Measured: 532.2. Cmpd20 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-methoxy-ethoxy)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinebenzenesulfonic acid salt ¹H-NMR (CD₃OD) δ: 7.93 (d, J = 7.1 Hz, 1H),7.73-7.85 (m, 4H), 7.69 (d, J = 7.1 Hz, 1H), 7.56 (s, 1H), 7.34-7.44 (m,3H), 5.26-5.34 (m, 2H), 4.14 (s, 3H), 3.86-3.94 (m, 2H), 3.41 (s, 3H),1.45 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₄H₂₅ClF₃N₅O₂: 508.2 (M + H), Measured: 508.2. Cmpd 213-tert-Butyl-5-[4-(2-methoxy-ethoxy)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine-2-yl]-1-methyl-1H-pyrazole-4- carbonitrilebenzenesulfonic acid salt ¹H-NMR (CD₃OD) δ: 7.92-7.97 (m, 1H), 7.77-7.84(m, 4H), 7.71 (dd, J = 6.9, 1.6 Hz, 1H), 7.60 (s, 1H), 7.36-7.45 (m,3H), 5.42 (dt, J = 4.0, 2.3 Hz, 2H), 4.19 (s, 3H), 3.89-3.95 (m, 2H),3.41 (s, 3H), 1.49 (s, 9H). Mass Spectrum (LCMS, ESI pos.) CalculatedFor C₂₅H₂₅F₃N₆O₂: 499.2 (M + H), Measured: 499.1. Cmpd 432-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-fluoro-phenyl)-3H-imidazo[4,5-c]pyridine hydrochloride ¹H-NMR (400 MHz, CD₃OD)δ: 9.45 (s, 1H), 8.20 (s, 1H), 7.95-8.01 (m, 1H), 7.81-7.89 (m, 2H),7.69-7.76 (m, 1H), 4.21 (s, 3H), 1.46 (s, 9H). Mass Spectrum (LCMS, ESIpos.) Calculated For C₂₀H₁₉ClFN₅: 384.1 (M + H), Measured: 384.3. Cmpd46 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine hydrochloride ¹H-NMR(400 MHz, CD₃OD) δ: 9.34 (s, 1H), 8.29 (s, 1H), 7.79 (td, J = 7.7, 1.8Hz, 1H), 7.63-7.73 (m, 1H), 7.36-7.51 (m, 2H), 4.20 (s, 3H), 1.43 (s,9H). Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₁H₁₉ClF₃N₅: 434.1(M + H), Measured: 434.2. Cmpd 482-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-fluoro-phenyl)-3H-imidazo[4,5-c]pyridine hydrochloride ¹H-NMR (400 MHz, CD₃OD)δ: 9.47 (s, 1H), 8.37 (s, 1H), 7.84 (td, J = 7.6, 1.6 Hz, 1H), 7.68-7.78(m, 1H), 7.42-7.55 (m, 2H), 4.39 (s, 3H). Mass Spectrum (LCMS, ESI pos.)Calculated For C₁₇H₁₀ClF₄N₅: 396.1 (M + H), Measured: 396.3. Cmpd 772-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-fluorophenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR(400 MHz, d₆-DMSO) δ: 8.11-8.23 (m, 1H), 7.58 (d, J = 2.2 Hz, 1H),7.16-7.36 (m, 3H), 4.01 (s, 3H), 4.03 (s, 3H), 1.38 (s, 9H). MassSpectrum (LCMS, ESI pos.): Calculated for C₂₁H₂₁ClFN₅O: 414.2 (M + H);Measured: 414.0. Cmpd 782-(5-tert-Butyl-4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine methanesulfonic acidsalt ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.86 (d, J = 7.8 Hz, 1H), 7.76 (t, J =7.3 Hz, 1H), 7.61-7.70 (m, J = 7.1, 4.5 Hz, 2H), 7.31 (s, 1H), 4.12 (s,3H), 4.02 (s, 3H), 2.36 (s, 3H), 1.35 (s, 9H). Mass Spectrum (LCMS, ESIpos.): Calculated for C₂₂H₂₁F₄N₅O: 448.2 (M + H); Measured: 448.2. Cmpd89 2-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chlorophenyl)-4-(2,2,2-trifluoro-ethoxy)-3H-imidazo[4,5-c]pyridinesodium salt ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.70 (dd, J = 7.6, 1.7 Hz, 1H),7.51 (dd, J = 8.1, 1.2 Hz, 1H), 7.44 (s, 1H), 7.40 (td, J = 7.5, 1.3 Hz,1H), 7.29-7.35 (m, 1H), 5.14 (q, J = 9.5 Hz, 2H), 4.00 (s, 3H), 1.39 (s,9H). Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₂H₂₀Cl₂F₃N₅O:498.1 (M + H); Measured: 498.1. Cmpd 902-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(2,2,2-trifluoro-ethoxy)-6-(2-trifluoromethoxyphenyl)-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.95 (d, J = 7.6 Hz,1H), 7.51 (s, 1H), 7.37-7.50 (m, 3H), 5.17 (q, J = 9.5 Hz, 2H), 4.01 (s,3H), 1.39 (s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculated forC₂₃H₂₀ClF₆N₅O₂: 548.1 (M + H); Measured: 548.1. Cmpd 912-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-fluorophenyl)-4-(2,2,2-trifluoroethoxy)-3H-imidazo[4,5-c]pyridine sodiumsalt ¹H-NMR (400 MHz, d₆-DMSO) δ: 8.07-8.19 (m, 1H), 7.66 (d, J = 2.2Hz, 1H), 7.19-7.37 (m, 3H), 5.21 (q, J = 9.3 Hz, 2H), 4.02 (s, 3H), 1.39(s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₂H₂₀ClF₄N₅O:482.1 (M + H); Measured: 482.1. Cmpd 922-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-fluorophenyl)-4-isopropoxy-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR(400 MHz, d₆-DMSO) δ: 8.04-8.16 (m, 1H), 7.56 (d, J = 2.0 Hz, 1H),7.17-7.35 (m, 3H), 5.60 (spt, J = 6.2 Hz, 1H), 4.00 (s, 3H), 1.41 (d, J= 6.4 Hz, 6H), 1.39 (s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculatedfor C₂₃H₂₅ClFN₅O: 442.2 (M + H); Measured: 442.1. Cmpd 932-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-6-(2-trifluoromethoxyphenyl)-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR(400 MHz, d₆-DMSO) δ: 7.92 (d, J = 7.6 Hz, 1H), 7.42-7.50 (m, 1H),7.35-7.42 (m, 3H), 5.57 (spt, J = 6.2 Hz, 1H), 3.99 (s, 3H), 1.39 (s,9H), 1.38 (d, J = 6.1 Hz, 6H). Mass Spectrum (LCMS, ESI pos.):Calculated for C₂₄H₂₅ClF₃N₅O₂: 508.2 (M + H); Measured: 508.1. Cmpd 972-[4-Chloro-5-(2-fluoro-1,1-dimethyl-ethyl)-2-methyl-2H-pyrazol-3-yl]-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine sodium salt¹H-NMR (400 MHz, d₆-DMSO) δ: 7.71 (dd, J = 7.7, 1.8 Hz, 1H), 7.49 (dd, J= 7.9, 1.3 Hz, 1H), 7.36-7.42 (m, 1H), 7.35 (s, 1H), 7.25-7.33 (m, 1H),4.63 (d, J = 47.9 Hz, 2H), 4.05 (s, 3H), 3.96 (s, 3H), 1.41 (d, J = 1.7Hz, 6H). Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₁H₂₀Cl₂FN₅O:448.1 (M + H); Measured: 448.1. Cmpd 986-(2-Chloro-phenyl)-2-(5-isopropyl-thiophen-3-yl)-4-methoxy-3H-imidazo[4,5-c]pyridine ¹H-NMR (400 MHz, CD₃OD) δ: 7.88-7.98 (m, 1H),7.62-7.70 (m, 1H), 7.50-7.55 (m, 1H), 7.44-7.50 (m, 1H), 7.28-7.42 (m,3H), 4.12-4.17 (m, 3H), 3.17-3.28 (m, 1H), 1.36-1.40 (m, 6H). MassSpectrum (LCMS, ESI pos.) Calculated for C₂₀H₁₈ClN₃OS: 384.0 (M + H),Measured: 384.1 Cmpd 992-(4-tert-Butyl-furan-2-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.70(dd, J = 7.6, 1.7 Hz, 1H), 7.48 (dd, J = 7.8, 1.2 Hz, 1H), 7.37 (td, J =7.5, 1.3 Hz, 1H), 7.32 (d, J = 1.0 Hz, 1H), 7.29 (dd, J = 7.8, 1.7 Hz,1H), 7.26 (s, 1H), 6.77 (d, J = 1.0 Hz, 1H), 3.93 (s, 3H), 1.25 (s, 9H).Mass Spectrum (LCMS, ESI pos.): Calculated for C₂₁H₂₀ClN₃O₂: 382.1 (M +H); Measured: 382.1. Cmpd 1002-(1-tert-Butyl-5-methyl-1H-pyrazol-4-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR (400 MHz, d₆-DMSO)δ: 7.76 (s, 1H), 7.72 (dd, J = 7.8, 1.7 Hz, 1H), 7.47 (dd, J = 7.8, 1.2Hz, 1H), 7.36 (td, J = 7.5, 1.3 Hz, 1H), 7.23-7.30 (m, 2H), 3.16 (s,3H), 2.98 (s, 3H), 1.62 (s, 9H). Mass Spectrum (LCMS, ESI pos.):Calculated for C₂₁H₂₂ClN₅O: 396.2 (M + H); Measured: 396.1. Cmpd 1012-(5-Bromo-4-tert-butyl-furan-2-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR (400 MHz, d₆-DMSO)δ: 7.69 (dd, J = 7.6, 1.7 Hz, 1H), 7.48 (dd, J = 7.8, 1.2 Hz, 1H), 7.37(td, J = 7.5, 1.5 Hz, 1H), 7.26-7.32 (m, 1H), 7.26 (s, 1H), 6.80 (s,1H), 3.93 (s, 3H), 1.34 (s, 9H). Mass Spectrum (LCMS, ESI pos.):Calculated for C₂₁H₁₉BrClN₃O₂: 460.0 (M + H); Measured: 460.0. Cmpd 1022-(1-tert-Butyl-1H-pyrazol-4-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine sodium salt ¹H-NMR (400 MHz, d₆-DMSO) δ: 8.15(s, 1H), 7.89 (s, 1H), 7.70 (d, J = 7.6 Hz, 1H), 7.48 (d, J = 7.6 Hz,1H), 7.37 (t, J = 7.3 Hz, 1H), 7.29 (t, J = 7.8 Hz, 1H), 7.26 (s, 1H),3.93 (s, 3H), 1.56 (s, 9H). Mass Spectrum (LCMS, ESI pos.): Calculatedfor C₂₀H₂₀ClN₅O: 382.1 (M + H); Measured: 382.1. Cmpd 1056-(2-Chloro-phenyl)-2-(4-isopropyl-thiophen-2-yl)-4-methoxy-3H-imidazo[4,5-c]pyridine ¹H-NMR (400 MHz, CD₃OD) δ: 7.73-7.79 (m, 1H),7.67 (dd, J = 7.4, 2.0 Hz, 1H), 7.48-7.51 (m, 1H), 7.32-7.41 (m, 3H),7.28 (s, 1H), 4.13 (s, 3H), 3.02 (sept., J = 7.04 Hz, 1H), 1.31 (d, J =7.04 Hz, 6H). Mass Spectrum (LCMS, ESI pos.) Calculated forC₂₀H₁₈ClN₃OS: 384.0 (M + H), Measured: 384.1 Cmpd 1062-(5-Bromo-4-tert-butyl-furan-2-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-b]pyridine sodium salt ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.99 (d,J = 2.2 Hz, 1H), 7.61 (d, J = 2.2 Hz, 1H), 7.55 (dd, J = 7.8, 1.2 Hz,1H), 7.44-7.49 (m, 1H), 7.41 (td, J = 7.4, 1.3 Hz, 1H), 7.29-7.37 (m,1H), 6.86 (s, 1H), 1.35 (s, 9H). Mass Spectrum (LCMS, ESI pos.):Calculated for C₂₀H₁₇BrClN₃O: 430.0 (M + H); Measured: 430.0. Cmpd 1072-(1-tert-Butyl-5-methyl-1H-pyrazol-4-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-b]pyridine sodium salt ¹H-NMR (400 MHz, d₆-DMSO) δ: 7.90 (d,J = 2.0 Hz, 1H), 7.81 (s, 1H), 7.56 (d, J = 2.0 Hz, 1H), 7.54 (d, J =7.8 Hz, 1H), 7.43-7.48 (m, 1H), 7.39 (t, J = 7.5 Hz, 1H), 7.28-7.35 (m,1H), 3.01 (s, 3H), 1.63 (s, 9H). Mass Spectrum (LCMS, ESI pos.):Calculated for C₂₀H₂₀ClN₅: 366.2 (M + H); Measured: 366.1. Cmpd 1082-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-b]pyridine ¹H-NMR (400 MHz, CD₃OD) δ: 8.50 (d, J= 2.0 Hz, 1H), 8.15 (d, J = 2.0 Hz, 1H), 7.57-7.62 (m, 1H), 7.41-7.54(m, 3H), 4.13 (s, 3H), 1.46 (s, 9H). Mass Spectrum (LCMS, ESI pos.)Calculated For C₂₀H₁₉Cl₂N₅: 400.1 (M + H), Measured: 400.1. Cmpd 1092-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-ethoxy-3H-imidazo[4,5-c]pyridine ¹H-NMR (400 MHz, CD₃OD) δ:7.67 (dd, J = 7.4, 2.0 Hz, 1H), 7.50-7.54 (m, 1H), 7.47 (s, 1H),7.34-7.44 (m, 2H), 4.65 (d, J = 7.0 Hz, 2H), 4.04 (s, 3H), 1.51 (t, J =7.0 Hz, 3H), 1.45 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₂H₂₃Cl₂N₅O: 444.1 (M + H), Measured: 444.1. Cmpd 1112-(4-tert-Butyl-1-methyl-1H-imidazol-2-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine ¹H-NMR (400 MHz, CDCl₃) δ: 7.67 (dd, J= 7.5, 1.8 Hz, 1H), 7.49-7.53 (m, 1H), 7.44 (s, 1H), 7.33-7.42 (m, 2H),7.06 (s, 1H), 4.16 (s, 3H), 4.12 (s, 3H), 1.34 (s, 9H). Mass Spectrum(LCMS, ESI pos.) Calculated For C₂₁H₂₂ClN₅O: 396.2 (M + H), Measured:396.1.

Example 312-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-morpholin-4-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine(Compound #59)

STEP A: 6-Chloro-2-morpholin-4-yl-3-nitro-pyridin-4-ylamine

To a solution of 2,6-dichloro-3-nitro-pyridin-4-ylamine (970 mg, 4.66mmol) in DMF (5 mL), K₂CO₃ (3.20 g, 23.0 mmol) was added, followed byaddition of morpholine (0.410 mL, 4.60 mmol). The resulting mixture wasstirred at room temperature for 2 h. The resulting mixture was dilutedwith water and extracted with EtOAc (3×10 mL). The organic layers werecombined, dried (Na₂SO₄) and concentrated. The resulting residue waspurified on silica (0:100-50:50 EtOAc-hexanes) to yield6-chloro-2-morpholin-4-yl-3-nitro-pyridin-4-ylamine. ¹H-NMR (400 MHz,CDCl₃) δ: 5.99-6.20 (m, 3H), 3.72-3.82 (m, 4H), 3.40-3.50 (m, 4H).

STEP B:2-Morpholin-4-yl-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylamine

Following the procedure described in the Example 24, STEP B andsubstituting suitably selected and substituted reagents, startingmaterials and conditions as would be readily apparent to those skilledin the art,2-Morpholin-4-yl-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-4-ylaminewas prepared from 6-chloro-2-morpholin-4-yl-3-nitro-pyridin-4-ylamine(prepared as described in the previous step). ¹H-NMR (400 MHz, CDCl₃) δ:7.76 (d, J=7.8 Hz, 1H), 7.56-7.64 (m, 1H), 7.45-7.56 (m, 2H), 6.18 (s,1H), 6.05 (br. s., 2H), 3.73-3.81 (m, 4H), 3.44-3.52 (m, 4H).

STEP C:2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-morpholin-4-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine

Following the procedure described in the Example 25, STEP C, andsubstituting suitably selected and substituted reagents, startingmaterials and conditions as would be readily apparent to those skilledin the art,2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-morpholin-4-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridinewas prepared. ¹H-NMR (400 MHz, CD₃OD) δ: 7.76-7.80 (m, 1H), 7.63-7.69(m, 1H), 7.52-7.61 (m, 3H), 4.15-4.21 (m, 4H), 4.10 (s, 3H), 3.81-3.87(m, 4H), 1.44 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₅H₂₆ClF₃N₅O: 419.2 (M+H). Measured: 419.4.

Example 322-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine-4-carbonitrile(Compound #60)

STEP A:4-Amino-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridine-2-carbonitrile

A solution of 4-amino-6-chloro-3-nitro-pyridine-2-carbonitrile (186 mg,0.937 mmol) in 1,4-dioxane (5 mL) was treated with K₃PO₄ (1.00 g, 5.10mmol), 2-trifluoromethylphenylboronic acid (178 mg, 0.937 mmol),1,1′-bis(di-tert-butylphosphino)ferrocene (60.5 mg, 0.128 mmol) andPd(OAc)₂ (28.6 mg, 0.128 mmol). The resulting mixture was stirred 80° C.overnight. The cooled mixture was diluted with EtOAc (50 mL) and washedwith water (50 mL). The aqueous layer was extracted twice with EtOAc (30mL) and the combined extracts were dried over MgSO₄ and concentrated invacuo. The resulting residue was purified on silica (0:100-100:0EtOAc-hexanes) to yield4-amino-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridine-2-carbonitrile.¹H-NMR (400 MHz, CDCl₃) δ: 7.79 (m, 1H), 7.67 (m, 4H), 7.52 (m, 1H),7.04 (s, 1H).

STEP B:2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine-4-carbonitrile

2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine-4-carbonitrilewas prepared from4-amino-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridine-2-carbonitrile(prepared as described in the previous step) following the proceduredescribed in Example 25, STEP C. ¹H-NMR (400 MHz, CD₃OD) δ: 7.94-7.97(m, 1H), 7.85-7.90 (m, 1H), 7.73-7.79 (m, 1H), 7.66-7.71 (m, 1H),7.59-7.64 (m, 1H), 4.61 (s, 3H), 1.46 (s, 9H). Mass Spectrum (LCMS, ESIpos.) Calculated For C₂₂H₁₈ClF₃N₆: 459.1 (M+H). Measured: 459.2.

Following the procedures described in Example 32 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 592-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-morpholin-4-yl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-c]pyridine hydrochloride¹H-NMR (400 MHz, CD₃OD) δ: 7.95 (s, 1H), 7.87 (d, J = 7.3 Hz, 1H),7.73-7.79 (m, 1H), 7.66-7.72 (m, 1H), 7.61 (d, J = 7.6 Hz, 1H), 4.23 (s,3H), 1.46 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₅H₂₆ClF₃N₅O: 419.2 (M + H), Measured: 419.4. Cmpd 602-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine-4-carbonitrilebenzenesulfonic acid salt ¹H-NMR (400 MHz, CD₃OD) δ: 7.94 (s, 1H),7.81-7.87 (m, 4H), 7.70-7.77 (m, 1H), 7.63-7.70 (m, 1H), 7.58 (d, J =7.3 Hz, 1H), 7.37-7.44 (m, 2H), 4.23-4.27 (m, 3H), 1.45 (s, 9H). MassSpectrum (LCMS, ESI pos.) Calculated For C₂₂H₁₈ClF₃N₆: 459.1 (M + H),Measured: 459.2.

Example 332-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-morpholin-4-yl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine(Compound #61)

STEP A:4-Morpholin-4-yl-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine

To a solution of4-chloro-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine (900 mg,2.83 mmol, prepared as described in the Example 1) in DMF (5 mL), K₂CO₃(1.90 g, 14.0 mmol) was added followed by addition of morpholine (0.240mL, 2.80 mmol). The resulting mixture was stirred at 80° C. overnight.The resulting mixture was diluted with water (20 mL) and extracted withEtOAc (3×10 mL). The organic layers were combined, dried (MgSO₄) andconcentrated. The resulting residue was purified on silica 0:100-50:50EtOAc/hexanes to yield4-morpholin-4-yl-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine.Mass Spectrum (LCMS, ESI pos.) Calculated For Mass Spectrum (LCMS, ESIpos.) Calculated For C₁₆H₁₅F₃N₄O₃: 369.1 (M+H). Measured: 369.1.

STEP B:2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-morpholin-4-yl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine

Following the procedure described in the Example 1,2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-morpholin-4-yl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine was prepared from4-morpholin-4-yl-3-nitro-6-(2-trifluoromethyl-phenyl)-pyridin-2-ylamine.¹H-NMR (400 MHz, CDCl₃) δ: 7.76-7.81 (m, 1H), 7.59-7.66 (m, 1H),7.51-7.58 (m, 2H), 6.57 (s, 1H), 4.27 (s, 3H), 3.98-4.05 (m, 4H),3.90-3.97 (m, 4H), 1.45 (s, 9H) Mass Spectrum (LCMS, APCI pos.)Calculated For C₂₅H₂₆ClF₃N₆O: 519.3 (M+H). Measured: 519.3.

Following the procedures described in Example 33 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 612-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-morpholin-4-yl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine hydrochloride¹H-NMR (400 MHz, CD₃OD) δ: 7.93-7.98 (m, 1H), 7.78-7.88 (m, 1H), 7.71(d, J = 6.8 Hz, 1H), 6.99 (s, 1H), 4.13-4.33 (m, 4H), 4.02-4.07 (m, 3H),3.87-3.95 (m, 4H), 1.45 (s, 9H). Mass Spectrum (LCMS, ESI pos.)Calculated For C₂₅H₂₆ClF₃N₆O: 519.3 (M + H), Measured: 519.3. Cmpd 632-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-piperidin-1-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine ¹H-NMR (400 MHz,CD₃OD) δ: 7.74 (d, J = 7.8 Hz, 1H), 7.46-7.63 (m, 3H), 6.93 (s, 1H),4.13 (br. s., 4H), 4.10 (s, 3H), 1.67 (br. s., 6H), 1.42 (s, 9H). MassSpectrum (LCMS, ESI pos.) Calculated For C₂₆H₂₈ClF₃N₆: 517.2 (M + H),Measured: 517.3. Cmpd 632-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-7-piperidin-1-yl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridine benzenesulfonicacid salt ¹H-NMR (400 MHz, CD₃OD) δ: ¹H-NMR (MeOH) δ: 7.93-7.98 (m, 1H),7.77-7.88 (m, 4H), 7.74 (d, J = 7.1 Hz, 1H), 7.37-7.45 (m, 3H), 7.14 (s,1H), 4.25-4.33 (m, 4H), 4.13-4.18 (m, 3H), 1.82-1.92 (m, 6H), 1.45 (s,9H) Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₆H₂₈ClF₃N₆: 517.2(M + H), Measured: 517.3. Cmpd 643-tert-butyl-5-[4-morpholin-4-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-isoxazole-4-carbonitrile ¹H-NMR (400 MHz,CD₃OD) δ: 7.75 (d, J = 8.1 Hz, 1H), 7.60-7.66 (m, 1H), 7.50-7.59 (m,2H), 6.90 (s, 1H), 4.26 (t, J = 4.3 Hz, 4H), 3.80 (t, J = 4.4 Hz, 4H),1.49 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₅H₂₃F₃N₆O₂: 497.2 (M + H), Measured: 497.1. Cmpd 643-tert-butyl-5-[4-morpholin-4-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-isoxazole-4-carbonitrile benzenesulfonicacid salt ¹H-NMR (400 MHz, CD₃OD) 7.93-7.99 (m, 1H), 7.73-7.89 (m, 5H),7.38-7.46 (m, 3H), 7.18 (s, 1H), 4.37-4.44 (m, 4H), 3.91-3.99 (m, 4H),1.50-1.57 (m, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₅H₂₃F₃N₆O₂: 497.2 (M + H), Measured: 497.1. Cmpd 653-tert-Butyl-1-methyl-5-[4-morpholin-4-yl-6-(2-trifloromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1H-pyrazole-4-carbonitrile ¹H-NMR (400MHz, CD₃OD) 7.75 (d, J = 7.8 Hz, 1H), 7.60-7.66 (m, 1H), 7.49-7.60 (m,2H), 7.02 (s, 1H), 4.21 (d, J = 4.5 Hz, 4H), 4.16 (s, 3H), 3.81-3.88 (m,4H), 1.46 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₆H₂₆F₃N₇O: 510.2 (M + H), Measured: 510.3. Cmpd 653-tert-butyl-1-methyl-5-[7-morpholin-4-yl-5-(2-trifluoromethyl-phenyl)-1H-imidazo[4,5-b]pyridin-2-yl]-1H-pyrazole-4-carbonitrilebenzenesulfonic acid salt ¹H-NMR (400 MHz, CD₃OD) δ: 7.93-7.98 (m, 1H),7.74-7.88 (m, 5H), 7.36-7.45 (m, 3H), 7.22 (s, 1H), 4.32-4.39 (m, 4H),4.16 (s, 3H), 3.90-3.97 (m, 4H), 1.48 (s, 9H). Mass Spectrum (LCMS, ESIpos.) Calculated For C₂₆H₂₆F₃N₇O: 510.2 (M + H), Measured: 510.3. Cmpd662-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-pyrrolidin-1-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine ¹H-NMR (400 MHz,CD₃OD) δ: 7.76 (d, J = 7.8 Hz, 1H), 7.50-7.65 (m, 3H), 6.85 (s, 1H),4.10 (s, 3H), 3.98 (s, 4H), 1.98-2.02 (m, 4H), 1.42 (s, 9H). MassSpectrum (LCMS, ESI pos.) Calculated For C₂₅H₂₆ClF₃N₆: 505.2 (M + H),Measured: 505.3. Cmpd 662-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-pyrrolidin-1-yl-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine benzenesulfonicacid salt ¹H-NMR (400 MHz, CD₃OD) δ: 7.92-7.97 (m, 1H), 7.70-7.87 (m,5H), 7.37-7.45 (m, 3H), 7.05 (s, 1H), 4.05-4.32 (m, 7H), 2.15-2.24 (m,4H), 1.45 (s, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated ForC₂₅H₂₆ClF₃N₆: 505.2 (M + H), Measured: 505.3.

Example 342-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-c]pyridinehydrochloride (Compound #41)

STEP A: 5-tert-Butyl-2-methyl-2H-pyrazole-3-carboxylic acid(2-bromo-5-nitro-pyridin-4-yl)-amide

A solution of 2-bromo-5-nitro-pyridin-4-ylamine (62 mg, 0.28 mmol) inTHF (5 mL), was treated with NaH (34 mg, 0.85 mmol) under Ar. Theresulting solution was stirred for 10 min and then treated with5-tert-butyl-2-methyl-2H-pyrazole-3-carbonyl chloride (62 mg, 0.31 mmol)in THF (1 mL). The resulting mixture was stirred at room temperature for1 h. The resulting mixture was purified by direct application to silicapreparative TLC plates (2000 micron) and eluted with 3:7 EtOAc-hexanesto yield 5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid(2-bromo-5-nitro-pyridin-4-yl)-amide. ¹H-NMR (400 MHz, CDCl₃) δ: 11.2(s, 1H), 9.18 (s, 1H), 9.11 (s, 1H), 6.65 (s, 1H). 4.18 (s, 1H), 1.34(s, 9H).

STEP B:6-Bromo-2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-3H-imidazo[4,5-c]pyridine

A solution of 5-tert-butyl-2-methyl-2H-pyrazole-3-carboxylic acid(2-bromo-5-nitro-pyridin-4-yl)-amide (79.8 mg, 0.183 mmol, prepared asdescribed in the previous step) in acetic acid (1 mL) was treated withFe powder (102 mg, 1.82 mmol). The resulting mixture was stirred at 110°C. for 1 h, cooled to room temperature, and treated with EtOAc (10 mL)and saturated NaHCO₃ (10 mL). The organic layer was separated, washedwith saturated NaHCO₃ (10 mL), H₂O (10 mL), concentrated, and theresulting residue dried in vacuo to yield6-bromo-2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-3H-imidazo[4,5-c]pyridine.¹H-NMR (400 MHz, CDCl₃) δ: 10.0 (br s, 1H), 8.80 (br s, 1H), 7.60 (br s,1H), 6.60 (m, 1H), 4.40 (s, 3H), 1.30 (s, 9H).

STEP C:2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-c]pyridinehydrochloride

A solution of6-bromo-2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-3H-imidazo[4,5-c]pyridine(50 mg, 0.15 mmol, prepared as described in the previous step),2-chlorophenylboronic acid (47 mg, 0.30 mmol), 2M Na₂CO₃ (0.60 mL, 1.2mmol) and DME (1 mL) was stirred at 90° C. for 18 h. The resultingmixture was allowed to cool to room temperature and organic layer wasseparated. The organic layer was purified by direct application tosilica preparative TLC plates (2000 micron) and eluted with 3:7EtOAc-hexanes to yield2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-c]pyridine.

A solution of2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-c]pyridine(22.6 mg, 0.061 mmol, as prepared above) in Et₂O (1 mL) was treated with1 M HCl in Et₂O (0.068 mL, 0.068 mmol). The resulting mixture wasstirred at room temperature for 10 min and concentrated. The residue wasdried in vacuo to yield2-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-3H-imidazo[4,5-c]pyridinehydrochloride. ¹H-NMR (400 MHz, CD₃OD) δ: 9.28 (s, 1H), 8.13 (s, 1H),7.66-7.71 (m, 2H), 7.63 (td, J=7.7, 1.8 Hz, 1H), 7.53-7.60 (m, 1H), 7.02(s, 1H), 4.36 (s, 3H), 1.35 (s, 9H). Mass Spectrum (LCMS, ESI pos.)Calculated For C₂₀H₂₀ClN₅: 366.1 (M+H). Measured: 366.2.

Following the procedures described in Example 34 above, and substitutingsuitably selected and substituted reagents, starting materials andconditions as would be readily apparent to those skilled in the art, thefollowing representative compounds of the present invention wereprepared.

Cmpd 39 2-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethoxy-phenyl)-3H-imidazo[4,5-c]pyridine hydrochloride ¹H-NMR (400 MHz, CD₃OD)δ: 9.31 (s, 1H), 8.18 (s, 1H), 7.73-7.85 (m, 2H), 7.58-7.68 (m, 2H),7.02 (s, 1H), 4.36 (s, 3H), 1.35 (s, 9H). Mass Spectrum (LCMS, ESI pos.)Calculated For C₂₁H₂₀F₃N₅O: 416.2 (M + H), Measured: 416.3 Cmpd 402-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5c]pyridine hydrochloride ¹H-NMR (400 MHz, CD₃OD)δ: 9.28 (s, 1H), 8.13 (s, 1H), 7.66-7.72 (m, 2H), 7.63 (td, J = 7.6, 1.6Hz, 1H), 7.53-7.60 (m, 1H), 7.02 (s, 1H), 4.36 (s, 3H), 1.35 (s, 9H).Mass Spectrum (LCMS, ESI pos.) Calculated For C₂₁H₂₀F₃N₅: 400.2 (M + H),Measured: 400.3. Cmpd 422-(5-tert-Butyl-2-methyl-2H-pyrazol-3-yl)-6-(2-fluoro-phenyl)-3H-imidazo[4,5-c]pyridine hydrochloride ¹H-NMR (400 MHz, CD₃OD) δ: 9.27 (s,1H), 8.22 (s, 1H), 7.78 (td, J = 7.6, 1.8 Hz, 1H), 7.64-7.73 (m, 1H),7.38-7.51 (m, 2H), 7.04 (s, 1H), 4.36 (s, 3H), 1.35 (s, 9H). MassSpectrum (LCMS, ESI pos.) Calculated For C₂₀H₂₀FN₅: 350.2 (M + H),Measured: 350.3 Cmpd 443-tert-Butyl-5-[6-(2-fluoro-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]-1-methyl-1H-pyrazole-4-carbonitrile hydrochloride ¹H-NMR (400 MHz, CD₃OD)δ: 9.43 (s, 1H), 8.33 (s, 1H), 7.80 (td, J = 7.6, 1.6 Hz, 1H), 7.63-7.73(m, 1H), 7.35-7.51 (m, 2H), 4.21 (s, 3H), 1.46 (s, 9H). Mass Spectrum(LCMS, ESI pos.) Calculated For C₂₁H₁₉FN₆: 375.2 (M + H), Measured:375.4 Cmpd 453-tert-Butyl-1-methyl-5-[6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-2-yl]1H-pyrazole-4-carbonitrile hydrochloride ¹H-NMR (400 MHz,CD₃OD) δ: 9.35 (s, 1H), 8.12 (s, 1H), 7.94-8.01 (m, 1H), 7.81-7.88 (m,2H), 7.68-7.76 (m, 1H), 4.20 (s, 3H), 1.43 (s, 9H). Mass Spectrum (LCMS,ESI pos.) Calculated For C₂₂H₁₉F₃N₆: 425.2 (M + H), Measured: 425.2 Cmpd47 3-tert-Butyl-1-methyl-5-(6-phenyl-3H-imidazo[4,5-c]pyridin-2-yl)-1H-pyrazole-4-carbonitrile hydrochloride ¹H-NMR (400 MHz, CD₃OD) δ: 9.35(s, 1H), 8.35 (s, 1H), 7.85-7.95 (m, J = 6.7, 2.9 Hz, 2H), 7.61-7.70 (m,3H), 4.20 (s, 3H), 1.46 (s, 9H). Mass Spectrum (LCMS, ESI pos.)Calculated For C₂₁H₂₀N₆: 357.2 (M + H), Measured: 357.4

Example 352-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine(Compound #11)

Step A: Ethyl 3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxylate

A 5-L, four neck round bottom flask equipped with overhead air stirrer,positive pressure nitrogen inlet, thermocouple, and addition funnel wascharged with ethyl 3-tert-butyl-1-methyl-1H-pyrazole-5-carboxylate (250g, 1.19 mol) in dichloromethane (2.5 L). The resulting solution wascooled to 10° C. with a wet-ice bath. Sulfuryl chloride (149 mL, 1.49mol) was added via addition funnel at such which maintained thetemperature between 21-31° C. The resulting mixture was then stirred for2 h at room temperature. A separate 12-L, four neck flask equipped withoverhead air stirrer and thermocouple was charged H₂O (3.75 L) andcooled to 10° C. This mixture was then added via addition funnel, whilemaintaining the temperature below 32° C. and the resulting mixture wasstirred for 30 min. The layers were separated, the aqueous layer wasextracted with dichloromethane (2×1 L). The organic layer was carefullywashed with NaHCO₃ (saturated, 2×2 L), brine (1.25 L), dried overNa₂SO₄, filtered, and evaporated to yield ethyl3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxylate as a whitesolid. ¹H NMR (CHLOROFORM-d) δ: 4.39 (q, J=7.1 Hz, 2H), 4.07 (s, 3H),1.29-1.49 (m, 12H)

Step B: 3-tert-Butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxylic acid

A 12-L, four neck round bottom flask equipped with overhead air stirrer,positive pressure nitrogen inlet, thermocouple, and addition funnel wascharged with ethyl3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxylate (282 g, 1.15mol) and EtOH (4.3 L). 3M NaOH (960 mL, 2.87 mol) was added in oneportion and the resulting slurry began to clarify immediately. Theresulting mixture was stirred at room temperature for 2 h and yielded aturbid solution. The turbid solution was evaporated and the resultingaqueous slurry was diluted with H₂O (2 L). The basic solution wasacidified to pH ˜2 using concentrated HCl. The aqueous layer wasextracted with dichloromethane (2×800 mL), dried over MgSO₄, filtered,and evaporated to yield3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxylic acid as anoff-white solid. ¹H NMR (CHLOROFORM-d) δ: 4.11 (s, 3H), 1.41 (s, 9H)

Step C: 3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxyl chloride

A 3-L, four neck round bottom flask equipped with magnetic stirrer,positive pressure nitrogen inlet, gas outlet into a sodium bicarbonatescrubber, thermocouple, and addition funnel was charged withtert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxylic acid (99.68 g,0.460 mol), toluene (1.50 L), and dimethylformamide (1.78 mL). Oxalylchloride (41.50 mL, 60.71 g, 0.469 mol) was added via addition funnelover 15 min, and a temperature increase to 23° C. was observed, withsignificant but controlled off-gassing. The resulting mixture wasinitially turbid but turned clear after 30 min. The mixture wasconcentrated to yield3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxyl chloride as ayellow solid. ¹H NMR (400 MHz, CHLOROFORM-d) δ 1.40 (s, 9H), 4.04 (s,3H)

Step D: 6-Chloro-2-methoxy-3-nitropyridin-4-amine

A 5-L, four neck round bottom flask equipped with overhead stirrer,positive pressure nitrogen inlet, 500-mL addition funnel with nitrogenoutlet and a thermocouple was charged with2,6-dichloro-3-nitropyridin-4-amine (150.0 g, 0.72 mol) and MeOH (1.50L) and the resulting brown suspension was stirred at room temperature.NaOCH₃ (25% solution in MeOH, 260 mL, 1.155 mol) was charged to theaddition funnel and added over 30 min (the temperature did not exceed32° C.). The resulting red suspension was stirred for 1 h, thentransferred to a 3-L round bottom flask (with MeOH) and evaporated tonear dryness on a rotary evaporator. The resulting red sludge wasdiluted with aqueous ammonium chloride (1.75 L) and extracted with EtOAc(2×900 mL). The combined organics were washed with water (150 mL), thewater layer was diluted with brine (100 mL) and back-extracted withEtOAc (100 mL). The combined organics were dried (MgSO₄) andconcentrated under reduced pressure at 60° C. to yield6-chloro-2-methoxy-3-nitropyridin-4-amine as a yellow solid. ¹H NMR(CHLOROFORM-d) δ: 6.36 (s, 1H), 6.14 (br. s., 2H), 4.04 (s, 3H)

Step E: 6-(2-Chlorophenyl)-2-methoxy-3-nitropyridin-4-amine

A 5 L, four neck round bottom flask equipped with mechanical stirrer,water condenser with nitrogen inlet, thermocouple, and stopper wascharged with 6-chloro-2-methoxy-3-nitro-4-pyridinamine (125.30 g, 0.615mol), 2-chlorophenylboronic acid (116.36 g, 0.744 mol), sodium carbonate(164.97 g, 1.54 mol), toluene (1.80 L), water (0.8 L), and ethanol(0.625 L) and the resulting mixture stirred to achieve a red slurry. Theslurry was heated to a mild reflux for 15 min to degas solution and thenthe temperature was lowered to 60° C. The resulting mixture was treatedwith (1,1′-bis-(di-tert-butylphosphino)ferrocenepalladium(II) chloride(40.8 g, 61 mmol) and the temperature increased to 69° C., generating amild reflux. The temperature to 60° C. and stirring was continued for 17h. The resulting mixture was diluted into water (2 L) and ethyl acetate(1 L), then filtered through CELITE, washing with ethyl acetate (1 L).The layers of filtrate were partitioned and the aqueous furtherextracted with ethyl acetate (3×500 mL). The combined organics weredried (MgSO₄) and concentrated to yield a dark oil. The dark oil wasdissolved in dichloromethane and slurried with silica gel (325 g). Theslurry was loaded onto a BIOTAGE 150M (2.5 kg silica) and eluted withdichloromethane (3 L) and ethyl acetate-dichloromethane 1:19 (9 L).Fractions of suitable purity were concentrated, lastly from heptane (500mL) to yield the title compound as a residue. The residue (282 g) wastriturated with MTBE (0.50 L), heated in water bath at 40° C. for 30min, transferred to a mechanically stirred 5 L round bottom flask thendiluted with heptane (2 L). The resulting slurry was stirred for 1 h atroom temperature and the solids collected by filtration. The filter cakewashed with MTBE-heptane (1:9, 500 mL) and heptane (500 mL), then driedin vacuum oven at 50° C. for 45 min to yield6-(2-chlorophenyl)-2-methoxy-3-nitropyridin-4-amine as a yellow solid.¹H NMR (400 MHz, CHLOROFORM-d) δ 3.62 (s, 1H), 4.07 (s, 3H), 6.14 (br.s., 2H), 6.69 (s, 1H), 7.30-7.40 (m, 2H), 7.42-7.52 (m, 1H), 7.59-7.66(m, 1H)

Step F:3-tert-Butyl-4-chloro-N-(6-(2-chlorophenyl)-2-methoxy-3-nitropyridin-4-yl)-1-methyl-1H-pyrazole-5-carboxamide

A 5 L, four neck round bottom flask equipped with mechanical stirrer,nitrogen inlet, addition funnel with stopper, and thermocouple wascharged 6-(2-chlorophenyl)-2-methoxy-3-nitropyridin-4-amine (111.40 g,0.398 mol) and tetrahydrofuran (1.90 L). The resulting mixture wascooled to 3° C. in ice-water bath and then treated with sodium hydride(31.85 g, 0.796 mol) carefully in one portion with an exotherm to 7° C.observed, to yield a deep-red slurry. This slurry was chilled to 1° C.and a solution of 3-tert-butyl-1-methyl-1H-pyrazole-4-carbonyl chloride(113.05 g, 0.438 mol) in tetrahydrofuran (0.275 L) was added dropwisevia addition funnel over 30 min, with an exotherm to 10° C. observed.The ice bath was drained and the resulting mixture reached 8° C. over 30min. The resulting mixture was then poured into saturated ammoniumchloride (2.5 L) and extracted with ethyl acetate (2 L, 2×1 L). Thecombined organics were washed with brine (1 L) and dried (MgSO₄)overnight, protecting from light. The organic phases were concentratedto yield a the title compound as a residue. The residue was trituratedwith heptane (2.25 L) at 60° C. for 30 min, and the resulting mixturecooled to room temperature while protecting from light. The resultingsolids were collected by filtration, washed with heptane (250 mL), anddried in a vacuum oven (50° C.) for 5 h to yield3-tert-butyl-4-chloro-N-(6-(2-chlorophenyl)-2-methoxy-3-nitropyridin-4-yl)-1-methyl-1H-pyrazole-5-carboxamideas a yellow solid. ¹H NMR (400 MHz, CHLOROFORM-d) δ 1.41 (s, 9H), 4.10(s, 3H), 4.12 (s, 3H), 7.34-7.43 (m, 2H), 7.47-7.55 (m, 1H), 7.60-7.68(m, 1H), 8.49 (s, 1H), 10.13 (br. s., 1H)

Step G:N-(3-amino-6-(2-chlorophenyl)-2-methoxypyridin-4-yl)-3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxamide

A 2.25 L plastic coated Parr bottle was charged with3-tert-butyl-4-chloro-N-(6-(2-chlorophenyl)-2-methoxy-3-nitropyridin-4-yl)-1-methyl-1H-pyrazole-5-carboxamide(55.30 g, 0.115 mol) and ethyl acetate (0.55 L). To the resulting slurrywas added a slurry of 5% Pt(Sulfided)/C (2.80 g) in ethyl acetate (˜20mL). The resulting mixture was agitated under 35-40 psi hydrogen gas,recharging with hydrogen gas as needed. After 3 h, hydrogen uptakeceased. The resulting mixture was filtered through CELITE to removecatalyst and the filter cake washed with ethyl acetate. The filtrate wasconcentrated to yieldN-(3-amino-6-(2-chlorophenyl)-2-methoxypyridin-4-yl)-3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxamideas a off-white solid. ¹H NMR (400 MHz, CHLOROFORM-d) δ 1.42 (s, 9H),3.98 (br. s., 2H), 4.06 (s, 3H), 4.15 (s, 3H), 7.27-7.35 (m, 2H), 7.44(dd, J=7.83, 1.22 Hz, 1H), 7.55 (s, 1H), 7.63 (dd, J=7.58, 1.71 Hz, 1H),8.54 (br. s., 1H)

Step H:2-(3-tert-Butyl-4-chloro-1-methyl-1H-pyrazol-5-yl)-6-(2-chlorophenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine

A 2-L four neck round bottom flask equipped with mechanical stirrer,reflux condenser with nitrogen outlet, positive pressure nitrogen inletand thermocouple was charged withN-(3-amino-6-(2-chlorophenyl)-2-methoxypyridin-4-yl)-3-tert-butyl-4-chloro-1-methyl-1H-pyrazole-5-carboxamide(156.2 g, 0.346 mol) and AcOH (glacial, 780 mL). The resulting mixturewas heated to 90° C. for 2 h. The resulting mixture was then was cooledto 50° C., transferred to a one-neck round bottom flask and concentratedon a rotary evaporator (bath at 50° C.). The resulting orange pastysolid was dissolved in EtOAc (1.5 L) and added to a separatory funnelcontaining saturated aqueous sodium bicarbonate (2 L) and EtOAc (1.5 L).The pH of the aqueous was still acidic, and was adjusted with 50% wt/wtNaOH (˜10 mL) to pH 8-9, then back to neutral with aqueous HCl (2 M, 120mL) to a final pH of 6-8. The turbid organic layer was separated and theaqueous layer extracted with EtOAc (2×500 mL). The combined turbidorganic layers were warmed in a 50° C. bath with gentle stirring andwithin 1-2 min, a clear orange solution resulted. The warm organic layerwas quickly washed with brine (500 mL), dried (MgSO₄) with occasionalwarming throughout the drying process, filtered and the volatilesremoved under reduced pressure. The resulting residue crystallized onstanding and then redissolved with dichloromethane to yield a turbidmixture. The resulting concentrate was loaded onto BIOTAGE 150M (2.5 kgsilica, prewetted with 4 L heptane) and eluted with heptane (4 L), 10%EtOAc in heptane (12 L), and finally 20% EtOAc in heptane (16 L),whereby fractions of suitable purity were collected and concentrated toyield the title compound.

Final purification was affected using a 3-L one neck round bottom flask,to which was added2-(3-tert-butyl-4-chloro-1-methyl-1H-pyrazol-5-yl)-6-(2-chlorophenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine(166 g), along with heptane (1.66 L). The flask was swirled on a rotovapbath at 45-48° C. for 15 min, the sides of the flask were scraped andthe swirling continued for an additional 15 min. The heat was turnedoff, ice was added to the bath and the contents swirled until roomtemperature was achieved. The solid was collected by filtration, washedwith heptane (100 mL), and dried in a vacuum oven (50° C.) for 16 h toyield2-(3-tert-butyl-4-chloro-1-methyl-1H-pyrazol-5-yl)-6-(2-chlorophenyl)-4-methoxy-3H-imidazo[4,5-c]pyridineas a off-white solid. ¹H NMR (CHLOROFORM-d) δ: 10.25 (br. s., 1H), 7.75(dd, J=7.6, 1.7 Hz, 1H), 7.64-7.72 (m, 1H), 7.47-7.54 (m, 2H), 7.28-7.43(m, 2H), 4.37 (s, 3H), 4.20 (s, 3H), 1.45 (s, 9H). NMR Note: Multiplesignals observed for some resonances due to either tautomerization ofimidazole ring or restricted single-bond rotation.

The product prepared as described above was determined by powder X-raydiffraction to be crystalline form. More particularly, the pXRD of asample of the off-white product, prepared as described above, was packedonto a zero background holder and scanned under ambient conditions oftemperature and humidity. The sample was scanned from 3 to 35° in 2θwith a step size of 0.0165° in 2θ with a continuous scan and a countingtime of 10.16 sec. The effective scan speed was 0.2067°/s. Instrumentvoltage and current settings were 45 kV and 40 mA.

The crystalline form of2-(3-tert-butyl-4-chloro-1-methyl-1H-pyrazol-5-yl)-6-(2-chlorophenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine,prepared as described above, was characterized by its powder X-raydiffraction pattern, comprising the peaks, listed in Table XRD-1, below.

TABLE XRD-1 PXRD Peaks Pos. [°2θ] d-spacing [Å] Rel. Int. [%] 8.5410.352 100 11.19 7.909 19 12.88 6.872 27 15.27 5.804 8 15.94 5.559 8818.42 4.816 5 20.31 4.372 9 22.25 3.995 23 23.43 3.797 28 24.19 3.680 1225.71 3.465 17 28.24 3.160 9 29.78 3.000 9

Preferably, the crystalline form of2-(3-tert-butyl-4-chloro-1-methyl-1H-pyrazol-5-yl)-6-(2-chlorophenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine,prepared as described above, is characterized by its pXRD pattern whichcomprises peaks having a relative intensity greater than or equal toabout 10%, more preferably peaks having a relative intensity greaterthan or equal to about 20%.

Example 362-(5-tert-Butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-chloro-phenyl)-4-methoxy-3H-imidazo[4,5-c]pyridinepotassium salt (Compound #11)

A 50 mL, single neck round bottom flask was charged with2-(3-tert-butyl-4-chloro-1-methyl-1H-pyrazol-5-yl)-6-(2-chlorophenyl)-4-methoxy-3H-imidazo[4,5-c]pyridine(1.99 g, 4.27 mmol, prepared as described in Example 35 above),tetrahydrofuran (4.00 mL), and methanol (4.00 mL) to yield a solution.The solution was treated with potassium methoxide (˜25% w/w in methanol,1.20 mL, 4.28 mmol). The resulting solution was then concentrated toyield potassium2-(3-tert-butyl-4-chloro-1-methyl-1H-pyrazol-5-yl)-6-(2-chlorophenyl)-4-methoxyimidazo[4,5-c]pyridin-3-ideas a yellow foam. ¹H NMR (DMSO-d₆) δ: 7.71 (dd, J=7.6, 1.7 Hz, 1H), 7.50(dd, J=7.9, 1.3 Hz, 1H), 7.39 (td, J=7.5, 1.2 Hz, 1H), 7.35 (s, 1H),7.27-7.34 (m, 1H), 4.03 (s, 3H), 3.97 (s, 3H), 1.39 (s, 9H)

Biological Example 1 In Vitro Canine TRPM8 Functional Assay

The functional activity of representative compounds of the formula (I)of the present invention was quantified by measuring changes inintracellular calcium concentration using a Ca²⁺-sensitive fluorescentdye. The changes in fluorescent signal were monitored by a fluorescenceplate reader, either a FLIPR™ (Molecular Devices) or FDSS (Hamamatsu).Increases in intracellular Ca²⁺ concentration were readily detected uponactivation with icilin.

HEK293 cells stably expressing canine TRPM8 were routinely grown asmonolayers in Dulbecco's minimum essential medium supplemented with 10%FBS, 2 mM L-glutamine, 100 units/mL penicillin, 100 ug/mL streptomycinand 400 μg/mL G418. Cells were maintained in 5% CO₂ at 37° C. At 24 hrprior to assay, cells were seeded in black wall, clear-basepoly-D-lysine coated 384-well plates (BD Biosciences, NJ, USA) at adensity of 5,000 cells per well in culture medium and grown overnight in5% CO₂ at 37° C. On assay day, growth media was removed, and cells wereloaded with Calcium 3 Dye (Molecular Devices) for 35 min at 37° C.,under 5% CO₂ and then incubated for 25 min at room temperature andatmosphere. Subsequently, cells were tested for agonist-inducedincreases in intracellular Ca²⁺ levels using FLIPR™ or FDSS. Cells weretreated with compounds of the formula (I) at varying concentrations andintracellular Ca²⁺ was measured for 5 min prior to the addition oficilin to each well to achieve a final concentration that produces anapproximately 80% maximal response. EC₅₀ or IC₅₀ values for compounds ofthe present invention were determined from eight-pointconcentration-response studies and represent the concentration ofcompound required to elicit or inhibit 50% of the maximal response,respectively.

Maximal fluorescence intensity (FI) achieved upon addition of icilin wasexported from the FLIPR™ or FDSS software and further analyzed usingGraphPad Prism 3.02 (Graph Pad Software Inc., CA, U.S.A.). Basal FI wassubtracted prior to normalizing data to percent of maximal response.Curves were generated using the average of quadruplicate wells for eachdata point using nonlinear regression of either sigmoidal dose responseor sigmoidal dose response (variable slope). Finally, the EC₅₀ and IC₅₀values were calculated with the best-fit curve determined by GraphPadPrism

Representative compounds of the present invention were tested accordingto the procedures as described in Biological Example 1 above, withresults as listed in Table 2, below.

TABLE 2 in vitro TRP M8 Activity Cmpd No. % Inh @ 0.2 μM IC₅₀ (nM)  1 9927  2 100 13  3 100 17  4 37  5 99 16  6 65 69  7 99 38  8 99 6.0  9^(A) 100 5.6 10 101 16  11^(A) 100 3.5 12 101 11 13 94 46 14 99 1.215 100 1.8 16 99 0.59 17 99 1.7 18 99 8.2 19 100 0.84 20 99 0.95 21 990.69 22 99 1.4  23^(A) 96 26 24 99 7.4 25 100 12 26 100 35 27 73 124 2899 11 29 99 33 30 87 87 31 100 18 32 100 7.6 33 98 40 34 89 77 35 67 3626 37 61 39 69 75 40 86 59 41 94 51 42 75 59 43 100 22 44 98 37 45 98 2746 99 19 47 56 48 59 49 100 6.4 50 91 56 51 88 72 52 80 79 53 99 27 5499 4.2 55 95 54 56 99 24 57 101 1.6 58 101 2.0  59^(A) 99 1.1 60 99 25 61^(A) 100 5.3  62^(A) 99 30  63^(A) 99 3.1  64^(A) 97 14  65^(A) 993.2  66^(A) 100 6.5 67 4 68 8 70 36 71 100 8.8 72 95 63 73 100 28 74 9396 75 100 24 76 98 5.8 77 102 20 78 100 16 79 101 20 80 100 42 81 67 12083 99 1.8 84 100 1.9 85 32 86 49 87 72 131 88 36 89 100 0.53 90 99 0.7391 99 3.8 92 99 2.8 93 99 1.2 94 99 22.5 95 100 27 96 48 97 101 4.9 98^(A) 100 14 99 97 31.8 100  94 61.3 101  88 33.9 102  70 120 103  1015.4 105  97 28 106  not tested 107  not tested 108  not tested 109  nottested 110^(A ) 99 24 111  62 112  98 19 ^(A)The noted compounds wereprepared and tested as multiple batches, as the free base and/or asdifferent corresponding salt forms. For said compounds, the biologicalactivity listed in Table 2 above is an average of the measured values.

Biological Example 2 Inhibition of Icilin-Induced “Wet-Dog” Shakes inRats

Icilin was initially developed as a “super-cooling” compound by DelmarChemicals Ltd. Subsequently it was shown to be one of the most potentknown agonists of TRPM8 (MCKEMY, D. D., et al “Identification of a coldreceptor reveals a general role for TRP channels inthermosensation”,Nature, pp 52-58, Vol. 416 (6876)), having an EC₅₀ value of 0.2 μM instimulating calcium ion influx into TRPM8 transfected cells (BEHRENDT,H-J., et al., “Characterization of the mouse cold menthol receptor TRPM8and vanilloid receptor type-1 VR1 using a fluorometric imaging platereader (FLIPR) assay”, Brit J Pharmacol, 2004, pp 737-745, Vol. 141(4)).Initial in vivo testing of icilin showed it to cause “wet-dog” shakes inrats. Similar shaking or jumping behavior was also evident in mice,rabbits, cats, dogs and monkeys. In humans, icilin produced a sensationof coolness on contact with mucous membranes, cold prickling when 0.1 mgwas dropped on the tongue and coldness in the mouth, pharynx and chestlasting 30-60 min when 5-10 mg was ingested orally (WEI, E. T., et al.,“AG-3-5: a chemical producing sensations of cold”, J Pharm Pharmacol.,1983, pp 110-112, Vol. 35). The inhibition or reversal of icilin-inducedshaking behaviors in rodents provides evidence for the engagement andfunctional blockade of the TRPM8 channel and thereby for the utility ofTRPM8 antagonists in treating or preventing a disease or condition in amammal in which the disease or condition is affected by the modulationof TRPM8 receptors.

Male Sprague Dawley rats (220-450 g, Charles River Labs,n=6-9/treatment) were used to evaluate the ability of test compounds toblock icilin-induced “wet-dog” shakes (WDS). The test compound wasadministered in 10% hydroxypropyl-β-cyclodextrin (HP-β-CD), p.o., 60 minbefore icilin. Icilin was then administered in 10% solutol/H₂O, at 3.0mg/kg, i.p., and spontaneous “wet-dog” shakes were counted 10 minfollowing the icilin injection over a 10-min period. Results forrepresentative compounds of the present invention are presented in Table3 below as a percent inhibition of shakes, which was calculated asfollows:% Inhibition=[1−(test compound WDS count/vehicle WDS count)]×100.

Biological Example 3 Chronic Constriction Injury (CCI)-Induced Model ofNeuropathic Pain-Acetone-Induced Hypersensitivity

Male Sprague-Dawley rats (225-450 g; n=5-8/treatment) were used toevaluate the ability of test compounds to reverse CCI-induced coldhypersensitivity. Four loose ligatures of 4-0 chromic gut weresurgically placed around the left sciatic nerve under inhalationanesthesia as described by Bennett et al. (BENNETT, G. J., et al., “Aperipheral mononeuropathy in rat that produces disorder of painsensation like those seen in man”, Pain, 1988, pp 87-107, Vol. 33(1)).Fourteen to 35 days following CCI surgery, subjects were placed inelevated observation chambers containing wire mesh floors, and fiveapplications of acetone (0.05 mL/application separated by approximately5 min) were spritzed onto the plantar surface of the paw using amultidose syringe. An abrupt withdrawal or lifting of the paw wasconsidered a positive response. The number of positive responses wasrecorded for each rat over the five trials. Following baselinewithdrawal determinations, test compounds were administered in 10%hydroxypropyl-β-cyclodextrin (HP-β-CD), p.o. The number of withdrawalswas re-determined at 2 hr after compound administration. Representativecompounds of the present invention were administered at 10 mg/kg in 10%HP-β-CD and tested according to this procedure. Results are presentedbelow as a percent inhibition of shakes, which was calculated for eachsubject and then averaged by treatment as follows:% Inhibition=[1−(test compound withdrawals/pre-test withdrawals)]×100.

Representative compounds of the present invention were tested accordingto the procedures as described in Biological Example 2 and BiologicalExample 3 above, with results as listed in Table 3, below.

TABLE 3 Icilin and CCI Inhibition - Compounds of Formula (I) Icilin %Inhibition @ 1.5 h Cmpd No. 10 mg/kg 5.6 mg/kg 3 mg/kg  CCI % Inhibition@ 2 h 3 21.3 5 20.3 9 91.3 41.8 52 11 98 97.6 85.3 82 17 38

Formulation Example 1 Oral Solid Dosage Formulation—Prophetic Example

As a specific embodiment of an oral composition, 100 mg of the Compound#11, prepared as in Example 28, above is formulated with sufficientfinely divided lactose to provide a total amount of 580 to 590 mg tofill a size 0 hard gel capsule.

While the foregoing specification teaches the principles of the presentinvention, with examples provided for the purpose of illustration, itwill be understood that the practice of the invention encompasses all ofthe usual variations, adaptations and/or modifications as come withinthe scope of the following claims and their equivalents.

What is claimed:
 1. A compound of formula (I)

wherein R¹ is selected from the group consisting of hydrogen, fluoro,chloro, fluorinated C₁₋₄alkyl and fluorinated C₁₋₄alkoxy; R² ishydrogen;

wherein R³ is selected from the group consisting of hydrogen, chloro,cyano, C₁₋₄alkyl, fluorinated C₁₋₄alkyl, C₁₋₄alkoxy, fluorinatedC₁₋₄alkoxy, —O—(CH₂)₂—OH, —O—CH₂—CO₂H, —O—(CH₂)₂—O—(C₁₋₄alkyl),—O—CH₂-(fluorinated C₁₋₂alkyl), —O—(CH₂)₂—NR^(A)R^(B) and —NR^(A)R^(B);wherein R^(A) and R^(B) are each independently selected from the groupconsisting of hydrogen and C₁₋₄alkyl; alternatively R^(A) and R^(B) aretaken together with the nitrogen atom to which they are bound to form aring structure selected form the group consisting of pyrrolidin-1-yl,piperidin-1-yl, piperazin-1-yl, 4-methyl-piperidin-1-yl,4-methyl-piperazin-1-yl and morpholin-4-yl; Q is an optionallysubstituted ring structure selected from the group consisting offormulas (a) through (h) (f)

wherein R¹⁴ is C₁₋₄alkyl; (g)

wherein R¹⁵ is C₁₋₄alkyl; and R¹⁶ is selected from the group consistingof hydrogen, chloro and bromo; and (h)

wherein R¹⁷ is C₁₋₄alkyl; or a solvate, hydrate, tautomer orpharmaceutically acceptable salt thereof.
 2. A compound as in claim 1,wherein R¹ is selected from the group consisting of hydrogen, fluoro,chloro, fluorinated C₁₋₂alkyl and fluorinated C₁₋₂alkoxy; R² ishydrogen:

(a)

(b)

wherein R⁵ is C₁₋₄alkyl; R⁶ is selected from the group consisting ofC₁₋₄alkyl and fluorinated C₁₋₄alkyl; and R⁷ is selected from the groupconsisting of hydrogen, chloro, fluoro, cyano, C₁₋₄alkyl and C₁₋₄alkoxy;(c)

wherein R⁸ and R⁹ are each independently selected from the groupconsisting of C₁₋₄alkyl; (d)

wherein R¹⁰ is C₁₋₄alkyl; and R¹¹ is selected from the group consistingof hydrogen and cyano; (e)

wherein R¹² and R¹³ are each independently selected from the groupconsisting of hydrogen and C₁₋₄alkyl; wherein R³ is selected from thegroup consisting of hydrogen, chloro, cyano, C₁₋₂alkyl, fluorinatedC₁₋₂alkyl, C₁₋₄alkoxy, fluorinated C₁₋₂alkoxy, —O—(CH₂)₂—OH,—O—CH₂—CO₂H, —O—(CH₂)₂—O—(C₁₋₄alkyl), —O—CH₂-(fluorinated C₁₋₂alkyl),—O—(CH₂)₂—NR^(A)R^(B) and —NR^(A)R^(B); wherein R^(A) and R^(B) are eachindependently selected from the group consisting of hydrogen andC₁₋₂alkyl; alternatively R^(A) and R^(B) are taken together with thenitrogen atom to which they are bound to form a ring structure selectedfrom the group consisting of pyrrolidin-1-yl, piperidin-1-yl,piperazin-1-yl, 4-methyl-piperazin-1-yl and morpholin-4-yl; Q is anoptionally substituted ring structure selected from the group consistingof formulas (a) through (h) (a)

(b)

wherein R⁵ is C₁₋₄alkyl; R⁶ is selected from the group consisting ofC₁₋₄alkyl and fluorinated C₁₋₄alkyl; and R⁷ is selected from the groupconsisting of hydrogen, chloro, fluoro, cyano, C₁₋₂alkyl and C₁₋₂alkoxy;(c)

wherein R⁸ and R⁹ are each independently selected from the groupconsisting of C₁₋₄alkyl; (d)

wherein R¹⁰ is C₁₋₄alkyl; and R¹¹ is selected from the group consistingof hydrogen and cyano; (e)

wherein R¹² and R¹³ are each independently selected from the groupconsisting of hydrogen and C₁₋₄alkyl; (f)

wherein R¹⁴ is selected from the group consisting of C₁₋₄alkyl; (g)

wherein R¹⁵ is C₁₋₄alkyl; and R¹⁶ is selected from the group consistingof hydrogen, chloro and bromo; and (h)

wherein R¹⁷ is C₁₋₂alkyl; or a solvate, hydrate, tautomer orpharmaceutically acceptable salt thereof.
 3. A compound as in claim 2,wherein R¹ is selected from the group consisting of hydrogen, chloro,fluoro, trifluoromethyl and trifluoromethoxy; R² is hydrogen;

wherein R³ is selected form the group consisting of hydrogen, chloro,cyano, C₁₋₂alkyl, trifluoromethyl, C₁₋₄alkoxy, —O—(CH₂)₂—OH,—O—CH₂—CO₂H, —O—(CH₂)₂—O—(C₁₋₂alkyl), O—CH₂-(fluorinated C₁₋₂alkyl),—O—(CH₂)₂—NR^(A)R^(B), pyrrolidin-1-yl, piperidin-1-yl, piperazin-1-yl,4-methyl-piperazin-1-yl and morpholin-4-yl; and wherein R^(A) and R^(B)are each an independently selected C₁₋₂alkyl; alternatively R^(A) andR^(B) are taken together with the nitrogen atom to which they are boundto form a ring structure selected from the group consisting ofpyrrolidin-1-yl, piperidin-1-yl, piperazin-1-yl, 4-methyl-piperazin-1-yland morpholin-4-yl; Q is an optionally substituted ring structureselected from the group consisting of formulas (a) through (h) (a)

(b)

wherein R⁵ is C₁₋₄alkyl; R⁶ is selected from the group consisting ofC₁₋₄alkyl and fluorinated C₁₋₄alkyl; and R⁷ is selected from the groupconsisting of hydrogen, chloro, fluoro, cyano, C₁₋₂alkyl and C₁₋₂alkoxy;(c)

wherein R⁸ and R⁹ are each independently selected from the groupconsisting of C₁₋₄alkyl; (d)

wherein R¹⁰ is C₁₋₄alkyl; and R¹¹ is selected from the group consistingof hydrogen and cyano; (e)

wherein R¹² is hydrogen and R¹³ is selected from the group consisting ofC₁₋₄alkyl; (f)

wherein R¹⁴ is selected from the group consisting of C₁₋₄alkyl; (g)

wherein R¹⁵ is C₁₋₄alkyl; and R¹⁶ is selected from the group consistingof hydrogen and bromo; and (h)

wherein R¹⁷ is C₁₋₂alkyl; or a solvate, hydrate, tautomer orpharmaceutically acceptable salt thereof.
 4. A compound as in claim 3,wherein R¹ is selected from the group consisting of hydrogen, chloro,fluoro, trifluoromethyl and trifluoromethoxy; R² is hydrogen;

is selected from the group consisting of

Q is selected from the group consisting of1-methyl-3-tert-butyl-pyrazol-5-yl,1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-fluoro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-trifluoromethyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-methoxy-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,1-tert-butyl-pyrazol-4-yl, 1-tert-butyl-5-methyl-pyrazol-4-yl,1-methyl-3-tert-butyl-imidazol-2-yl, 3-tert-butyl-isoxazol-5-yl,3-tert-butyl-4-cyano-isoxazol-5-yl, 4-isopropyl-thien-2-yl,5-isopropyl-thien-3-yl, 4-tert-butyl-fur-2-yl,4-tert-butyl-5-bromo-fur-2-yl, and

or a solvate, hydrate, tautomer or pharmaceutically acceptable saltthereof.
 5. A compound as in claim 4, wherein R¹ is selected from thegroup consisting of chloro, fluoro, trifluoromethyl andtrifluoromethoxy; R² is hydrogen;

is selected from the group consisting of

Q is selected from the group consisting of1-methyl-3-tert-butyl-pyrazol-5-yl,1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-fluoro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-tert-butyl-4-methoxy-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,3-tert-butyl-isoxazol-5-yl, 3-tert-butyl-4-cyano-isoxazol-5-yl,4-isopropyl-thien-2-yl, 5-isopropyl-thien-3-yl, 4-tert-butyl-fur-2-yl,4-tert-butyl-5-bromo-fur-2-yl and

or a solvate, hydrate, tautomer or pharmaceutically acceptable saltthereof.
 6. A compound as in claim 4, wherein R¹ is selected from thegroup consisting of chloro, fluoro, trifluoromethyl andtrifluoromethoxy; R² is hydrogen;

is selected from the group consisting of

Q is selected from the group consisting of1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl,1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-yl,3-tert-butyl-isoxazol-5-yl and

or a solvate, hydrate, tautomer or pharmaceutically acceptable saltthereof.
 7. A compound as in claim 4, wherein R¹ is selected from thegroup consisting of chloro, fluoro, trifluoromethyl andtrifluoromethoxy; R² is hydrogen;

is selected from the group consisting of

Q is selected from the group consisting of1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl,1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl and1-methyl-3-(1,1-dimethyl-2-fluoro-ethyl)-4-chloro-pyrazol-5-y; or asolvate, hydrate, tautomer or pharmaceutically acceptable salt thereof.8. A compound as in claim 4, wherein R¹ is selected from the groupconsisting of chloro and trifluoromethyl; R² is hydrogen;

is selected from the group consisting of

and; Q is selected from the group consisting of1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl and1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl; or a solvate, hydrate,tautomer or pharmaceutically acceptable salt thereof.
 9. A compound asin claim 4, wherein R¹ is chloro; R² is hydrogen;

and Q is 1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl; or a solvate,hydrate, tautomer or pharmaceutically acceptable salt thereof.
 10. Acompound as in claim 8, wherein the pharmaceutically acceptable saltthereof is selected from the group consisting of sodium salt, potassiumsalt and methanesulfonic acid salt.
 11. A pharmaceutical compositioncomprising a pharmaceutically acceptable carrier and a compound ofclaim
 1. 12. A process for making a pharmaceutical compositioncomprising mixing a compound of claim 1 and a pharmaceuticallyacceptable carrier.
 13. A method for inhibiting Icilin and CCIcomprising administering to a mammal an effective amount of a compoundas in claim
 1. 14. A compound as in claim 4, wherein R¹ is selected fromthe group consisting of chloro and trifluoromethyl; R² is hydrogen; R³is —OCH₃; Q is selected from the group consisting of1-methyl-3-tert-butyl-4-chloro-pyrazol-5-yl and1-methyl-3-tert-butyl-4-cyano-pyrazol-5-yl; or a solvate, hydrate,tautomer or pharmaceutically acceptable salt thereof.